61.Attimesthisbalanceofnature

问题详情：

61. At times this balance of nature ___________ (disturb), which results in a number of possibly unforeseen effects.

62. With his mind _____________ (focus) on the things not related to his studies, his marks have fallen rapidly.

63. When _____________(compare) with the size of the whole earth, the highest mountain doesn’t seem high at all.

64. Students should be encouraged_____________(present) their own opinions, whether right or wrong.

65. Walking along the river bank one day, I found a child ___________ (struggle) in the water.

66. The plan__________ (design) to encourage the employees to improve their work turned out to be a success.

67. The mobile phone _____________(guarantee) for at least five years, but it went wrong only one year later.

68. It’s high time someone ______________(protest) against human rights violations.

69. A sheep ___________ (feed) on this kind of special grass usually grows much faster than one on ordinary.

70. Some students have no idea of why they are studying, so they are _________ (aim) most of the time.

【回答】

61. is disturbed

62．focused

63．compared

64．to present

ggling

gned

67. was guaranteed

68. protested/should protest

69. feeding

70. aimless

知识点：语法填空

题型：未分类