1400 câu trắc nghiệm Đọc hiểu Tiếng Anh có đáp án cực hay

   Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces antisound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti- sound just enough to cause complete silence.

   The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

A. diverting people's attention from it

B. masking it with a louder noise

C. canceling it out electronically

D. removing its source

   Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces antisound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti- sound just enough to cause complete silence.

   The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

A. composing music

B. repairing alarm systems

C. eliminating engine noises

D. intensifying for warning sounds

   Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces antisound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti- sound just enough to cause complete silence.

   The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

A. cause deafness

B. create hazardous working conditions

C. influence ocean waves

D. damage loudspeakers and sound equipment

   Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces antisound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti- sound just enough to cause complete silence.

   The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

A. Ship's crews

B. Research engineers

C. People with insomnia

D. Engine repair teams

   Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces antisound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti- sound just enough to cause complete silence.

   The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

A. the nature of fog

B. a way to improve alarm systems

C. other causes of fatigue

D. other uses for the microprocessor

   The Hindu cultural celebrates marriage as a pure and pristine rite enabling two individuals start their journey of life together. It puts emphasis on the values of happiness, harmony and growth and could be traced back from the Vedic times.

   Months before the wedding ceremony, an engagement is held which is called "mangni". The couple is blessed here with gifts, jewelry and clothes. Another important ritual is the "mehendi" which is a paste made from the leaves of henna plant. It is the traditional art of adorning the hands and the feet of the bride with mehendi and the name of the groom is also hidden in the design.

   On the day of marriage, the couple exchanges garlands as a gesture of acceptance of one another and a pledge to respect one another as partners which is known as "jaimala". This is followed by "kanyadaan", where the father of the bride places her hand in the groom's hand requesting him to accept her as an equal partner.

   Another ritual is the "havan" in which the couple invokes Agni, the god of Fire, to witness their commitment to each other. Crushed sandalwood, herbs, sugar rice and oil are offered to the ceremonial fire. The "gath bandhan" takes place where scarves of the bride and groom are tied together symbolizing their eternal bonThis signifies their pledge before God to love each other and remain loyal. The couple then takes four "mangal pheras" or walk around the ceremonial fire, representing four goals in life: "Dharma", religious and moral duties; "Artha", prosperity; "Kama" earthly pleasures; "Moksha", spiritual salvation.

   The couple also takes seven steps together to begin their journey, called the "saptapardi". Then the ritual of "sindoor" takes place where the groom applies a small dot of vermilion, a red powder to the bride's forehead and welcomes her as his partner for life. This signifies the completion of the marriage. The parents of the bride and the groom then give their blessings, "ashirwad" to the newlywed couple as they touch the feet of their parents.

A. the wedding

B. the paste made from the leave of one another

C. the engagement

D. the gesture of acceptance of one another

   The Hindu cultural celebrates marriage as a pure and pristine rite enabling two individuals start their journey of life together. It puts emphasis on the values of happiness, harmony and growth and could be traced back from the Vedic times.

   Months before the wedding ceremony, an engagement is held which is called "mangni". The couple is blessed here with gifts, jewelry and clothes. Another important ritual is the "mehendi" which is a paste made from the leaves of henna plant. It is the traditional art of adorning the hands and the feet of the bride with mehendi and the name of the groom is also hidden in the design.

   On the day of marriage, the couple exchanges garlands as a gesture of acceptance of one another and a pledge to respect one another as partners which is known as "jaimala". This is followed by "kanyadaan", where the father of the bride places her hand in the groom's hand requesting him to accept her as an equal partner.

   Another ritual is the "havan" in which the couple invokes Agni, the god of Fire, to witness their commitment to each other. Crushed sandalwood, herbs, sugar rice and oil are offered to the ceremonial fire. The "gath bandhan" takes place where scarves of the bride and groom are tied together symbolizing their eternal bonThis signifies their pledge before God to love each other and remain loyal. The couple then takes four "mangal pheras" or walk around the ceremonial fire, representing four goals in life: "Dharma", religious and moral duties; "Artha", prosperity; "Kama" earthly pleasures; "Moksha", spiritual salvation.

   The couple also takes seven steps together to begin their journey, called the "saptapardi". Then the ritual of "sindoor" takes place where the groom applies a small dot of vermilion, a red powder to the bride's forehead and welcomes her as his partner for life. This signifies the completion of the marriage. The parents of the bride and the groom then give their blessings, "ashirwad" to the newlywed couple as they touch the feet of their parents.

A. It is entirely a spiritual traditional ritual allowing two individuals to live together.

B. It is a belief in the growth of a family newly formed by two individuals.

C. It is a wish of happiness and harmony to come to two individuals.

D. It is just a living-together announcement of two individuals.

   The Hindu cultural celebrates marriage as a pure and pristine rite enabling two individuals start their journey of life together. It puts emphasis on the values of happiness, harmony and growth and could be traced back from the Vedic times.

   Months before the wedding ceremony, an engagement is held which is called "mangni". The couple is blessed here with gifts, jewelry and clothes. Another important ritual is the "mehendi" which is a paste made from the leaves of henna plant. It is the traditional art of adorning the hands and the feet of the bride with mehendi and the name of the groom is also hidden in the design.

   On the day of marriage, the couple exchanges garlands as a gesture of acceptance of one another and a pledge to respect one another as partners which is known as "jaimala". This is followed by "kanyadaan", where the father of the bride places her hand in the groom's hand requesting him to accept her as an equal partner.

   Another ritual is the "havan" in which the couple invokes Agni, the god of Fire, to witness their commitment to each other. Crushed sandalwood, herbs, sugar rice and oil are offered to the ceremonial fire. The "gath bandhan" takes place where scarves of the bride and groom are tied together symbolizing their eternal bonThis signifies their pledge before God to love each other and remain loyal. The couple then takes four "mangal pheras" or walk around the ceremonial fire, representing four goals in life: "Dharma", religious and moral duties; "Artha", prosperity; "Kama" earthly pleasures; "Moksha", spiritual salvation.

   The couple also takes seven steps together to begin their journey, called the "saptapardi". Then the ritual of "sindoor" takes place where the groom applies a small dot of vermilion, a red powder to the bride's forehead and welcomes her as his partner for life. This signifies the completion of the marriage. The parents of the bride and the groom then give their blessings, "ashirwad" to the newlywed couple as they touch the feet of their parents.

A. decorating

B. painting

C. repairing

D. dying

   The Hindu cultural celebrates marriage as a pure and pristine rite enabling two individuals start their journey of life together. It puts emphasis on the values of happiness, harmony and growth and could be traced back from the Vedic times.

   Months before the wedding ceremony, an engagement is held which is called "mangni". The couple is blessed here with gifts, jewelry and clothes. Another important ritual is the "mehendi" which is a paste made from the leaves of henna plant. It is the traditional art of adorning the hands and the feet of the bride with mehendi and the name of the groom is also hidden in the design.

   On the day of marriage, the couple exchanges garlands as a gesture of acceptance of one another and a pledge to respect one another as partners which is known as "jaimala". This is followed by "kanyadaan", where the father of the bride places her hand in the groom's hand requesting him to accept her as an equal partner.

   Another ritual is the "havan" in which the couple invokes Agni, the god of Fire, to witness their commitment to each other. Crushed sandalwood, herbs, sugar rice and oil are offered to the ceremonial fire. The "gath bandhan" takes place where scarves of the bride and groom are tied together symbolizing their eternal bonThis signifies their pledge before God to love each other and remain loyal. The couple then takes four "mangal pheras" or walk around the ceremonial fire, representing four goals in life: "Dharma", religious and moral duties; "Artha", prosperity; "Kama" earthly pleasures; "Moksha", spiritual salvation.

   The couple also takes seven steps together to begin their journey, called the "saptapardi". Then the ritual of "sindoor" takes place where the groom applies a small dot of vermilion, a red powder to the bride's forehead and welcomes her as his partner for life. This signifies the completion of the marriage. The parents of the bride and the groom then give their blessings, "ashirwad" to the newlywed couple as they touch the feet of their parents.

A. tells

B. says

C. prays

D. talks

   The Hindu cultural celebrates marriage as a pure and pristine rite enabling two individuals start their journey of life together. It puts emphasis on the values of happiness, harmony and growth and could be traced back from the Vedic times.

   Months before the wedding ceremony, an engagement is held which is called "mangni". The couple is blessed here with gifts, jewelry and clothes. Another important ritual is the "mehendi" which is a paste made from the leaves of henna plant. It is the traditional art of adorning the hands and the feet of the bride with mehendi and the name of the groom is also hidden in the design.

   On the day of marriage, the couple exchanges garlands as a gesture of acceptance of one another and a pledge to respect one another as partners which is known as "jaimala". This is followed by "kanyadaan", where the father of the bride places her hand in the groom's hand requesting him to accept her as an equal partner.

   Another ritual is the "havan" in which the couple invokes Agni, the god of Fire, to witness their commitment to each other. Crushed sandalwood, herbs, sugar rice and oil are offered to the ceremonial fire. The "gath bandhan" takes place where scarves of the bride and groom are tied together symbolizing their eternal bonThis signifies their pledge before God to love each other and remain loyal. The couple then takes four "mangal pheras" or walk around the ceremonial fire, representing four goals in life: "Dharma", religious and moral duties; "Artha", prosperity; "Kama" earthly pleasures; "Moksha", spiritual salvation.

   The couple also takes seven steps together to begin their journey, called the "saptapardi". Then the ritual of "sindoor" takes place where the groom applies a small dot of vermilion, a red powder to the bride's forehead and welcomes her as his partner for life. This signifies the completion of the marriage. The parents of the bride and the groom then give their blessings, "ashirwad" to the newlywed couple as they touch the feet of their parents.

A. to do a ritual

B. to show both their acceptance of and the swear to respect the partner.

C. to express their acceptance of one another and a wish of happiness.

D. to express their vow to respect each other for the whole life.