开玩笑；B. turned转向；C. listened听；D. pointed指出。故选B项切题。

58. 考查动词词义辨析。根据上文“I helped carry the man out of the water”可知，应该是挽救了我的生命。A. created创造；创作；B. honored尊敬；尊重；给与荣誉；C. saved救，拯救；D. guided指导，指挥；故选C项切题。

59. 考查名词词义辨析。我没有想到这是多么巧合的一件事呀!A. coincidence巧合，巧事；B. change改变，变更，变换；C. pity怜悯，同情；D. pain疼痛；痛苦。故选A项切题。

60. 考查介词词组词义辨析。我高兴的是我在那儿及时帮助了我的儿子。A. on board在船上；B. in time及时；C. for sure肯定；D. on purpose目的。故选B项切题。 点睛：occur和happen的区别

1. occur是比较正式的用语，可用于具体或抽象的事物，通常指按计划或规律在较为确定的时间“发生”的事。跟to短语时，表示“想到”，而不是“发生”。例如：Something occurred意思是“某事发生了”。 An idea occurs to me that going to Switzerland for traveling will be marvelous! 我想到去瑞士旅游会很棒! 2. happen常指具体事件的发生，特别指那些偶然的或未能预见的“发生”，是不及物动词。例如：How did the accident happen? 这事故是怎样发生的?

If anything happens, please let me know. 有什么事发生，请告诉我。 如果happen后接不定式，是“碰巧”的意思。如：

I happened to meet him on my way home. 我在回家的路上碰巧遇到他。 注意：happen和happen to都是不及物动词或短语，不能用于被动语态。

第二节

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Diets have changed in China — and so too has its top crop. Since 2011,the country

___61___（grow）more corn than rice. Corn production has jumped nearly 125 percent over ___62___ past 25 years, while rice has increased only 7 percent.

A taste for meat is ___63___ (actual) behind the change: An important part of its corn is used to feed chickens, pigs, and cattle. Another reason for corn's rise: The government encourages farmers to grow corn instead of rice ___64___ (improve) water quality. Corn uses less water ___65___ rice and creates less fertilizer(化肥) runoff. This switch has decreased ___66___ (pollute) in the country's major lakes and reservoirs and made drinking water safer for people.

According to the World Bank, China accounts for about 30 percent of total ___67___ (globe)fertilizer consumption. The Chinese Ministry of Agriculture finds that between 2005—when the government ___68___