16.Floating in space for too long a time may also do harm to one's lungs and heart.
A.Right B.Wrong C.Not mentioned
17.At the end of the flight,Hartsfield became "seasick".
A.Right B.Wrong C.Not mentioned
18.Mattingly was much thinner than Hartsfield.
A.Right B.Wrong C.Not mentioned
19.Russian and American scientists are working together to solve the problem of motion sickness in astronauts.
A.Right B.Wrong C.Not mentioned
20.Untrained civilians are more likely to suffer from motion sickness in a spacecraft
A.Right B.Wrong C.Not mentioned
21.The motion sickness some astronauts suffered from during space travel had been caused by the defective digestive system.
A.Right B.Wrong C.Not mentioned
22 People suffering from motion sickness during space travel can alleviate its symptoms by eating or drinking something.
A.Right B.Wrong C.Not mentioned
【参考答案】
1.C 2.B 3.C 4.A 5.A 6.B 7.C
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