A seismograph oscillation of the ground caused by seismic waves, vibrations that travel from its point of origin through the Earth or along its surface.

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• The bell signaling the end of the first period rang loud, interrupting the professor’s closing comments

• It was  Mary Anderson, an amateur invention, who first patented windshield wipers for automobiles

• A thunder usually follows lightning by five seconds for every mile between the flash and the observer.

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• Most of the damage property attributed to the San Francisco earthquake of 1906 resulted from the fire that followed .

• Jill regrets having bought that second-hand laptop. She wishes she ______. 

• Gwendolyn Brooks, which won a Pulitzer Prize for Poetry in 1950, had 75 poems published by the time she was twenty.

• They are known that colds can be avoided by eating the right kind of food and taking exercise regularly.

• One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them: 

  If I am 10 centimeters taller, I would play basketball. 

• Many people who live near nuclear plants are concerned. _________ go wrong, the impact on the surrounding area can be disastrous. 

• I’m so tired; I’m finding it difficult in keeping my mind on my work.

• There always is one wise woman who is both feared and respected by her people

• We are very pleased with Susan s effort – she applies herself very well with the task in hand

• It is a common knowledge that Douglas intends to retire at the end of the season

• Located in Canada, the Columbia Ice field covers area of 120 square miles and is 3,30 feet thick in some places.

• As the marathon runner reached the half-way mark, he, being hot and was soaked with perspiration, stopped to rub himself down with a towel.

• One responsibility of human beings is not to interfere with the actions of another people except in the face of injustice

• Most bats roost in crevices, caves, or building by day and are active at night or twilight.

• To receive a degree from an American university, one must take many courses beside those in one’s major field.

• Although usual living on or under rocks or on coral reefs, marine snails have been observed in a great various of habitats

• Being the biggest expanse of brackish water in the world, the Baltic Sea is one of special interesting to scientists.