单选题The difference between us and Africans, as far .as music is concerned, is that ______.

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单选题Why is the reading system for the blind called the Braille?

单选题The money will be give to ______ need it more.

单选题What time do most stores close?

单选题One answer to the question of land shortage was suggested by an organization some years ago. A city was to be built at sea, housing 30,000 people. The suggestion was to shape the city like a harbor(港口). The outer wall of the harbor would stand on steel columns resting on the sea---bed. Naturally this could only be where the water was fairly shallow. The people would like to live in flats in the fifty----metre high outer wall. The flats would be all face inwards, and would be made of concrete(混泥土) and glass. The glass would be specially made and colored to control the heat and strong light from the sun. The planners called this man --- made harbor would be calm. On it would be floating islands carrying more building: a hospital, two theaters, museum, an art exhibition hall and a church. On one of the islands would be a special factory to take the salt out of sea water and turn it into fresh water. People living in the city could move around on small boats driven by electricity, so there would be no air pollution from the burning of gas. There would be platforms outside the man wall for ships bringing supplies. People could also travel to the mainland by motorboat or water plane.

单选题What did Linda do after graduating from college?

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单选题The population of our city is larger than ______ of theirs.

单选题— I feel much better now. — ______.

单选题This text most likely appears in a ______.

单选题Whattimedoesthewomanoftengettoherofficeeverymorning?

单选题 Hugh Troy, a well-known artist, was a very interesting and clever person who spent most of his life playing tricks for the joy of it. One winter, while a student at Cornell University in New York, Troy got hold of a very old and ugly wastebasket with a real rhinoceros (犀牛) foot as its base. He filled it with metal weights and tied 30 feet of clothes-line to either side. Later one night he and a friend carried it out onto campus, pulling the lines straight between them. Every few feet they would lower it into the snow, their own footprints so far away as to raise no suspicions (怀疑). The next morning someone noticed the prints and invited learned professors to come and have a look. Excitedly, they followed the rhinoceros tracks. Then they were led onto the ice covering Beeb Lake, which connected to where the school got its drinking water. There the tracks ended in a huge hole. It was said that half the population of Cornell stopped drinking tap water. Those who continued to drink it insisted that it tasted like rhinoceros.

单选题The notebook ______ cover is blue belongs to me. A. what B. which C. whom D. whose

单选题According to the passage , what happens when the temperature is increased in a closed container holding a liquid?

单选题Which of the following is correct?

单选题telephone is really ______ most useful invention, don't you think so?

单选题______ the town was attacked by the storm several times, little damage was done.