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A．She expects the weather to be nice next weekend.B．She forgot she had so much studyin

A. She expects the weather to be nice next weekend.
B. She forgot she had so much studying to do.
C. She usually hands in her assignments early.
D. She won't have much time to study later.

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Which of the following occurred as the ices from Halley's Comet evaporated？

A. Black dust was left on the comet's surface.
B. The nucleus of the comet expanded.
C. The tail of the comet straightened out.
D. Jets of gas caused the comet to increase its speed.

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听力原文： Some of the most interesting buildings in the world are the pyramids. Thousands of years ago in Egypt, kings built the pyramids. They used to build them as tombs. They thought pyramids would help them find life after death. They also wanted the world to remember them as important people. There are many pyramids along the Nile River. The largest is the pyramid of Khufu. It is made of 2,300,000 huge stones, most of which are higher than a person. It is about 144 meters high. To build this pyramid,100,000 men worked for twenty years.
The people of Mexico also built pyramids. They didn't build the pyramids for tombs. They used to build a pyramid and then build a temple on top of it. The pyramids of Mexico are not as high as those of Egypt, but they are big. Each pyramid has a stairway that goes from the bottom to the top. The biggest pyramid in Mexico is almost 2,000 years old. Scientist's think it took 10,000 men more than ten years to build. On top they built a temple to the sun. The temple is no longer there, but people call it the Pyramid of the Sun.
Scientists have studied the pyramids, but nobody can say just how the people of the ancient days built the pyramids and how they carried and lifted the huge stones. Each stone fits so well and they didn't have our modern machines Z.
(33)

A. They built the pyramid in honor of the gods.
B. They built the pyramid as their tombs.
C. They wanted the world to remember them.
D. Both B and C.

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是建设工程文件档案资料特性。

A. 规律性
B. 分散性
C. 多专业性

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A．She lost Saily's new address.B．Sally had to move unexpectedly.C．She'll bring the mai

A. She lost Saily's new address.
B. Sally had to move unexpectedly.
C. She'll bring the mail to Saily's house.
D. She's no longer in contact with Sally.

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A．She expects the weather to be nice next weekend.B．She forgot she had so much studyin