48. The moon-landing is mentioned in the first paragraph to illustrate ________.

34.

50. The foremost reason why the egg-based method is defective lies in ________

35.

18.He has made another wonderful discovery, ______ of great importance to science.

31.

19. ________ both sides accept the agreement ________a lasting peace be established in this region.

22

12.Even in the best possible scenario with every student getting 30 minutes of moderate to ______ movement everyday, it would account for only half of what is called for.

44. Research into the material culture of a nation is of great importance because ________

7. The supporters of death penalty argue that the regulation would _______ criminals from carrying guns.

43.How many students can get A in college nowadays?