31. A consumer may not think of household cleaning products as hazardous substances, but many of them can be harmful to health, especially if they are used improperly.
关键字：GMAT正确答案避免了指代的逻辑错误；主动语态优于被动
But连接两套主谓结构：
1. 主语：a consumer；谓语may not think of；宾语household cleaning products；宾语的补语as hazardous substances
2. 主语many of them (products)；谓语can be；表语harmful
注意：
有逻辑指代错误进而会引起歧义的，是错误的选项；避免了歧义的，是正确的方向。
Think of sth. as…
例句：
His proposal is think of as practical.
I think of Paris as a city of romance.
32. The Gorton-Dodd bill requires that a bank disclose to its customers how long it will delay access to funds from deposited checks.
关键字：requires that a bank disclose；虚拟语气；主动vs. 被动
主语The Gorton-Dodd bill；谓语requires；宾语that从句
注意：require sb. to do sth.
Require that 必须使用虚拟语气
例句：Require that all cash receipts be deposited in the bank.
Require of sb. that 虚拟语气
33. According to United States Air Force officials, a cannon that shoots dead chickens at airplanes has proved helpful in demonstrating what kind of damage can result when jets fly into a flock of large birds.
关键字：cannon that shoots dead chickens；定语从句 vs. ing分词作定语
主语a cannon；谓语has proved；表语helpful；that shoots dead chickens at airplanes定语从句修饰主语；in demonstrating表语的补语？？？？？？demonstrating后面应是省略了that吧，引出一个主谓结构——what kind of damage是what引导的名词性从句，作主语，can result是谓语；when…状语。
例句：
She prove herself innocent.
Time will prove me (to be) right.
He produces document to prove his claim.
34. Japan used the huge sums of capital it received from the United States after the Second World War to help build a modern industrial system.
关键字：huge sums of capital it received是复数名词；两套主谓的合一
主语Japan；谓语used；宾语the huge sums of capital；定语it received from the United States after the Second World War；to help是状语，表示目的？？？？
35. In the late seventh century, in a dispute over whether the Prophet Muhammad’s son-in-law, Ali, should carry on as the fourth caliph, Muhammad’s successor, Islam split into two branches, the Sunnis and the Shiites.
关键字：同位语；whether；
主语Islam；谓语 split；状语 into two branches
the Prophet Muhammad’s son-in-law《《===Ali（同位语）
caliph《《===Muhammad’s successor（同位语）
two branches《《== the Sunnis and the Shiites（同位语）
注意：用over和about表示“关于”，优选。
Whether可以有or not也可以没有
36. Wisconsin, Illinois, Florida, and Minnesota have begun to enforce statewide bans prohibiting landfills from accepting leaves, brush, and grass clippings.
关键字：bans prohibiting…from ing分词
主语：Wisconsin, Illinois, Florida, and Minnesota；谓语have begun to enforce；宾语statewide bans；prohibiting是什么形式修饰什么还不太确定？？？伴随？？定语？？修饰bans？？
注意：prohibit sb./sth. from ing
例句：
I fear that a prior engagement will prohibit me from joining you in dinner.
Common decency would prohibit me from doing so.
37. Few people realize that the chance of accidental injury or death may be at least as great in the “safety” of their own homes as in a plane or on the road.
关键字：as great in the “safety” as in；平行；情态动词may
主语：few people；谓语realize；宾语that宾语从句；从句中，主语the chance；谓语may be；表语as great
注意：GMAT中意用great来形容chance这样表示可能性的名词。
38. Despite protests from some waste-disposal companies, state health officials have ordered that the levels of bacteria in seawater at popular beaches be measured and the results published.
关键字：order that be；形式对称；并列句的be/become省略
主语state health officials；谓语have ordered；宾语that从句
注意：order的用法
例句：
A written order directing that such lodging be provided.
An order went forth that all prisoners should be killed.
39. A President entering the final two years of a second term is likely to be at a severe disadvantage and is often unable to carry out a legislation program.
关键字：is likely and is often; unable
主语A President；谓语--两个--is likely to be and is； unable是谓语2的表语；
注意：unable vs. cannot; able vs. can
例句：
Clare nodded, temporarily unable to speak.
Humanity cannot tolerate that guilt.
I'm able to talk loud.
You can talk loud here.
40. Artificial intelligence emerged during the late 1950’s as an academic discipline based on the assumption that computers could be programmed to think like people.
关键字：could be；
主语Artificial intelligence；谓语emerged；表语as an academic discipline；状语based on the assumption that computers could be programmed to think like people；that…是assumption的同位语。
