It seems we can’t get off the planet fast enough. Two thirds of NASA’s money is spent

29. What do we know about the Challenger Deep? A. Blue whales live there.
B. No one has ever been there.
C. It is the deepest known location on Earth. D. People are terrified by the sight of it.
30. What does the author think of the discovery in the Southern Ocean?
A. It’s surprising. B. It’s no wonder. C. It’s worrying. D. It’s no success.
31. What does the author want to tell us? A. Space exploration is of little value.
B. We spend too much money on space travel.
C. Humans’ success lies in how much they explore the sea.
D. The ocean is the place where we should make our efforts.


答案
28.A        29.C        30.B        31. D