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What is the 'seven minutes of terror' according to NASA engineers?
A．Rover's signals will delay seven minutes to travel to Earth from Mars.
B．Engineers won't be able to control or witness the Mars rover's seven minutes' soft landing.
C．The Mars rover needs seven minutes to increase speed for landing.
D．Curiosity will be lowered to the Martian surface on cables in seven minutes.

A.Rover's
B.
B．Engineers
C.
C．The
D.
D．Curiosity
E.


【参考答案】

B
本题设题点在定义概念处。根据句(7)可知，为实现软着陆，“好奇号”只有7分钟的时间减速。美国宇航局的科学家们......

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What is the 'seven minutes of terror' according to NASA engineers?A．Rover's signals will delay seven minutes to travel to Earth from Mars.B．Engineers won't be able to control or witness the Mars rover's seven minutes' soft landing.C．The Mars rover needs seven minutes to increase speed for landing.D．Curiosity will be lowered to the Martian surface on cables in seven minutes.
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Which of the following statements is INCORRECT according to the news item?A．Curiosity will be the seventh NASA spacecraft to land on the Mars if successful.B．Curiosity will trave at about 20,000 kilometers per hour when it hits the Martian surface.C．Curiosity is the size of a small car and has 17 cameras.D．Curiosity will be lowered to the Martian surface on cables and cut loose before the rocket pack blasts off.
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