37.
(A) more than
(B) less than
(C) at most
(D) no more than

33. (A) how (B) what (C) when (D) where

34. (A) operate (B) separate (C) diagnose (D) naturalize

35. (A) Since (B) Given (C) Namely (D) Therefore

36. (A) launch (B) content (C) impact (D) revolution

38. (A) both… and… (B) either… or… (C) neither… nor… (D) not… but…

39. (A) able (B) unable (C) ability (D) enabling

40. (A) take (B) takes (C) taken (D) taking

41. Osteoporosis refers to the ____________. (A) bone loss (B) slow growth (C) weight problem (D) blood pressure

42. In the sixth paragraph, “Our muscles and bones have developed to expect this force and it is needed to keep them strong and healthy.” What does the word it refer to? (A) Earth. (B) Gravity. (C) A spacesuit. (D) A spaceship.

43. What can be inferred from the passage? (A) The innovation of new spacesuits has made the long mission into the deep space possible. (B) The astronauts should be as static as possible in space to avoid the gradual waste of muscles. (C) Without gravity, the vertebrae will naturally expand slightly, causing a person to become taller. (D) Travel outside of Earth’s protective magnetic shield is irrelevant to the risk of heart disease deaths among the astronauts.