_______[A] missions[B] fortunes[C] interests[D] careers
_______
[A] missions [B] fortunes [C] interests [D] careers
_______
[A] missions [B] fortunes [C] interests [D] careers
A.Y
B.N
C.NG
A、the Apollo missions started the globalization.
B、the Apollo missions were promoted by globalization.
C、the Apollo missions had nothing to do with globalization.
D、the Apollo missions had slowed down globalization.
A.fuel
B.drills
C.oxygen system
D.landing vehicles
Laser-doppler radar is especially valuable in space missions because ______. ()
A.it is one thousand times more precise than microwave radar
B.it provides precise measures of the velocity of space vehicles
C.it is a new system of radar
D.it can measure the movement of a spaceship less accurately than a microwave radar
In the passage, the author wants to tell us ______.
A.that people dreamed of leaving their home planet and exploring other worlds became reality
B.after the Apollo program, the emphasis in piloted missions shifted to short-duration spaceflight
C.space exploration is a great challenge to human beings and will be achieved through generation's work
D.today efforts focus on keeping people healthy during space missions and in increasing the cost of sending satellites into orbit
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