17. Leave your key with a neighbor ____ you lock yourself out one day.

42. From the passage, we know in the U.S. ____.

64. 地震中，许多房屋受损严重，成千上万的人无家可归。

43. Choose the right time order of the following events.a. The first Father’s Day was observed.b. Mother’s Day was proclaimed a day for national observance.c. Father’s Day became a day for national observance.d. The idea of honoring fathers was brought up.

（  ）52. In response to an economic crisis, it is advisable to take risks.

65. 尽管互联网技术现在已经十分先进，但是在一些发展中国家互联网在普通用户中还远远没有普及。

10.

41. According to the passage, which of the following about the second Sunday in May is NOT true?

34. Don’t bother to look for my umbrella; it will ____ some day.

19. Only when your identity has been checked ____.

20. The new stadium being built for the next Paralympic Games will be ____ the one that has been destroyed.

（  ）54. It’s impossible for us to avoid the economic crisis, so we have to learn to live through it.