What can we learn from the first paragraph？
A. Sunscreen cream is essential in people's life.
B. The dermatologists prefer to attribute the skin problems to sunshine.
C. People agree with the dermatologists' opinion on using sunscreen cream.
D. Sunscreen cream actually increases the risk of skin cancer.
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Why is the Space Shuttle Columbia special？
A. Because it is not similar to the spaceships of the previous twenty years.
Because it has different designs and is able to return to earth and make further flights.
C. Because it can be used in a variety of ways now.
D. Because it can be used to establish colonies on earth.
The word "met" in Paragraph Three, Line Two probably refers to
A. see
B. discover
C. reach
D. act
地方导游服务程序是指从地陪接站开始，到旅游团离开本地并做完善后工作为止的工作程序。 ()
A. 正确
B. 错误
A．produceB．achieveC．recreateD．attain
A. produce
B. achieve
C. recreate
D. attain
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