单项选择题

SECTION A CONVERSATIONS In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow. Questions 1 to 4 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. Which of the following is NOT among the reasons leading to the woman’s eye problem

A．She has a lot of reading assignment.
B．Her room is not well lit.
C．The English Department is in a basement.
D．She lives in a basement and works hard.

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[听力原文]A New Need for Traffic LightsSpace is getting crowded. That’s the latest worry for many scientists. About ten thousand objects are orbiting our planet now. Some are satellites that have a job to do. Other items have finished their work. Parts of rockets may have been discarded during a flight and left behind in space.This is becoming a real problem. More items in space lead to more danger. Some of the objects now floating through space are just a few inches in size. But they can still do harm. If they hit a spacecraft or spacelab, they might destroy it.Space agencies can now locate objects in space with a computer. Yet, accidents still happen. Someone may see that two objects seem to be very close. But they have no power to prevent the crash. Experts can only plot courses to help future rockets avoid some of the objects.

单项选择题

The increasing global warming will have a devastating effect on some coastal areas, or ______ many scientists have warned.

A．so
B．it
C．thus
D．that

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