Only outside the Earth抯 atmosphere _____ to attain extremely high velocities.
A.to be safe for a space vessel
B.is it safe for a space vessel
C.for a space vessel to be safe
D.a space vessel to be safe
试卷相关题目
- 1The ______ trees have been ______ and removed from the bad road.
A.fallen; cut through
B.falling; cut in
C.fell; cut off
D.having fallen; cut
开始考试点击查看答案 - 2_______a plan to deal with it is important.
A.What we should work out
B.We should work out
C.That we should work out
D.That what we should work out
开始考试点击查看答案 - 3The reason ______ he was late was _______ he fell asleep.
A.why; why
B.why; that
C.that; because
D.why; because
开始考试点击查看答案 - 4The company have lost a lot of money in the development of new products. They are now ________.
A.making trouble
B.put to the trouble
C.in great trouble
D.running into the trouble
开始考试点击查看答案 - 5He moved to the south three years ago. He ________ in Guangzhou ________.
A.has lived ;ever since
B.had lived ;since then
C.lived ;ever since
D.lived ;since then
开始考试点击查看答案 - 6My deskmate wants to buy a new pen ______.
A.like me
B.like mine
C.as me
D.as mine
开始考试点击查看答案 - 7_____ orbits the Sun, Uranus rotates on its axis, an imaginary line through its centre.
A.For it
B.It
C.As it
D.There is
开始考试点击查看答案 - 8When young I was ________ shy to ask people for directions that I never dared to ask complete strangers the way.
A.too
B.very
C.so
D.enough
开始考试点击查看答案 - 9How often do you ______your watch?
A.wind
B.turn
C.fast
D.round
开始考试点击查看答案 - 10Excuse me, would you mind ________ a call first?
A.I make
B.if I make
C.I made
D.if I made
开始考试点击查看答案