Bats use echoes of their own high – frequency sounds to detect food and avoiding obstacles.

Câu hỏi liên quan

• Although the Red Cross accepts blood from most donors, the nurse will not let you to give blood if you have just had a cold.

• Choose the best answer:

  In Malaysia,........................ is free.

• First raise your left leg, and then, you should repeat after me.

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• Choose the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following questions.

  We need to build up people's awareness about the environment.

• Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

  Salegirl: "Can I help you? We 've got some new shirts here." - Customer: " Ok, Thanks._______."

• Identify the error in each sentence: 

  Last week Mark (A) told me that he (B) got very bored with his present job and (C) is looking for a (D) new one.

• Since fireworks are dangerous, many countries have laws preventing business to sell them.

• Identify the error in each sentence: Stuart stopped to write his letter because he had to leave for the hospital

• The food that Mark is cooking in the kitchen is smelling delicious.

• The TV station, in _______ to massive popular demand, decided not to discontinue the soap opera.

• There is special care for _____ sick and _______ elderly in this medical center. 

• Choose the best answer:

  Bill couldn’t stand ............. anyone .............. round all time.

• Choose the best answer:
  Farmers need to .........crops.

• Mary found it hard to concentrate on her work because the noise.

• Choose the best answer:

  Many people in the world are fond ................. football.

• Identify the error in each sentence: There is no need (A) for you to help cook (B) the meal. (C) Just sit down and enjoy (D)

• The water is  .................... You can’t drink it.

• Choose the best answer among A, B, C or D that best completes each sentence: He is not in town; he ….. on a special mission.

• Some critics have called Theodore Dreiser’s book Sister Carrie a first modern novel because it broke so many traditions.

• She has worked asasecretary                    she graduated fromcollege.