the Americans got scared because the Soviet students sent the first satellite into the outer space
the Soviet children were better at science and math than American children were
the Americans feared that their children would lag behind the Soviet children in the education of science and math
the Americans hoped they could send a satellite into the space too
第1题：
What is the main idea of the passage?
A. Science and its applications bring us many dangers.
B. The development of science mostly lies in people’s attitudes.
C. Mankind can largely take control of science with their efforts.
D. The future of science will be influenced by the dangerous ideas.
第2题：
A.wave to you goodbye
B.wave goodbye to you
C.goodbye
D.wave
第3题：
A、so a big job
B、a so big job
C、a such big job
D、such a big job
第4题：
Air gap is the vertical distance between the bottom of the hull and the ______．
A.Still water level
B.Wave crest
C.Wave crest plus the charted water depth and tidal corrections
D.Wave crest plus the charted water depth and tidal correction and storm surge
第5题：
A、not big enough
B、big not enough
C、big enough not
第6题：
Harmonic wave
第7题：
A.a so big work
B.a so big job
C.such a big work
D.a such big job
第8题：
What can we conclude from the recent study?
A. People think highly of science.
B. People hold mixed opinions about science.
C. Science is getting dangerously out of control.
D. Science is used for both good and bad purposes.
第9题：
A、shopping/ big shop
B、shopping/big shoppings
C、shoppings/big shops
D、shopping/big shops
第10题：