我国能源科技发展的第一个阶段目标是（）。 A.在我国踏入创新型

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问题单项选择题

我国能源科技发展的第一个阶段目标是（）。

A.在我国踏入创新型国家门槛后，努力成为能源科技国家

B.在我国成为创新型国家后，步入世界先进能源科技国家行列

C.努力成为创新型国家

D.成为世界领先的能源科技强国

答案

参考答案：B

阅读理解

阅读理解。

阅读提示：在我们北半球，正午的太阳在正南方。而在南半球，正午的太阳却是在正北方。

An English student goes to Australia to study. He walks around the city to look for a warm room.

One evening he walks in the street with a map of the city. He sees a house. " What a nice room it is! "

he says, " The windows are in the south side (面). The sun will come into the room in the day. I like it." So

he wants to live in it. But he is wrong (错的). The sun is always in the north in the city. Do you know why?

1. What does the English student want to do in Australia?

A. He wants to go on a trip.

B. He wants to study.

C. He wants to buy a room.

2. The student comes from ____________.

A. the U. K.

B. the U. S.

C. Canada

3. The sun is always in the ____________ in that city.

A. south

B. north

C. east

4. What is the English student looking for?

A. A good school.

B. A beautiful room.

C. A warm room.

5. The English student looks for a room ____________.

A. by bus

B. by bicycle

C. on foot

单项选择题

内部混响（internal reverberation）－彗星尾征在下列哪种情况下出现（）。

A.超声束垂直于胸壁和肺表面引起多次内部混响

B.超声束垂直于腹壁引起内部混响

C.超声束在器官组织的异物内来回反射

D.超声束垂直射入骨膜和骨表面

E.超声束射向肩关节软骨和骨表面时，在软骨内部来回反射