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问题 单项选择题

砂浆的搅拌时间每盘不应少于（）分钟。

A、1

B、2

C、3

D、4

答案

参考答案：B

阅读理解
根据短文内容，判断下列句子的正误，正确的用“T”，错误的用“F”。
        It takes only 30 seconds to finish the journey in the South Pole. Visitors to the South Pole like to walk
around, so there is a clear path in the snow there. Some visitors are so excited that they stand on their heads
and have their pictures taken with flags of the Antarctic countries in the background.
        The United States has kept a base in the South Pole since 1956. Chinese scientists and technological
engineers have built an observation station there, too.
        The South Pole itself is marked by a two-meter bamboo pole stuck in the ice. The ice cap (冰盖), which
is 2,850 meters thick, moves 12 meters a year in the direction of Buenos Aires, Argentina. So the bamboo pole
has to be moved back the same distance.
        The air in the South Pole is the cleanest on earth. Scientists from different countries have been working
on making the Antarctic a world park to save it from being polluted by the wrong use of its oil and other
mineral resources.
1. Why do visitors to the South Pole like to walk around? Because ____.
[ ]
A. there is a clear path in the snow there
B. it doesn't take long to finish the journey there
C. the weather there is suitable for visitors to do so
D. the air there is the cleanest on earth
2. Which of the following is RIGHT?
[ ]
A. People spend much time visiting the South Pole.
B. Two observation stations were built in the South Pole in 1956.
C. The air in Argentina is much cleaner than that in the United States.
D. Some visitors stand on their heads because they are excited and do so for fun
3. The passage is probably ____.
[ ]
A. a short story
B. an article about traveling tips
C. a news report
D. an article about popular science
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选择题

比较体循环和肺循环，何者错误？（　　）

选项体循环肺循环
A右心室发出，回到左心房左心室发出，回到右心房
B动脉血变成静脉血静脉血变成动脉血
C流经全身流经肺部
D组织细胞与毛细血管进行气体交换毛细血管与肺泡进行气体交换

A．A

B．B

C．C

D．D
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