If we have too______ fat and sugar, we will be in poor health.

A. few B. little C. many D. much

D 【解析】句意：如果我们有太多的脂肪和糖分，我们的健康状况就会不佳。考查形容词辨析题。四个选项都是形容词，few和many修饰复数名词，而fat and sugar是不可数名词，可排除AC选项。little和much都修饰不可数名词，但little表示否定意义，强调“几乎没有”，不可用副词too修饰，也可排除。too much太多的，后接不可数名词；根据句意语境，可知选A。

Some people don’t care about the environment, and make it even______.

A. bad B. badly C. worse D. worst

C 【解析】句意：有些人不关心环境，使环境变得更糟。考查形容词比较级辨析。even甚至，修饰比较级，bad和badly都是原级，worst是最高级，可排除ABD三个选项。根据句意语境，可知选C。

Joe had spent nearly a month preparing his singing contest, but the effect wasn’t as______ as he had expected.

A. well B. good C. better D. best

B 【解析】句意：乔花了将近一个月的时间准备他的歌唱比赛，但效果不如他预料的那么好。考查同级比较。as…as是固定短语，用于同级比较，中间需要原级形容词或副词；better是比较级，best是最高级，都可排除。本句空白处是对主语the effect（效果，抽象名词）的描述，需用形容词，well是副词，可排除。根据句意语境，可知选B。

The professor wanted to know______ his students would do with the water pollution caused by the factory.

A. where B. when C. what D. why

C 【解析】句意：教授想知道他的学生会对工厂造成的水污染做些什么。考查疑问词辨析题。A. where在哪里，问地点；B. when什么时候，问时间；C. what什么，问事/物；D. why为什么，问原因。本句是宾语从句，从句动词do是实义动词“做”，需接宾语，where、 when、why都不可做宾语，可排除。根据句意语境，可知选C。

We climbed to the top of the mountain______ we might see the scenes better.

A. so that B. as soon as C. now that D. as

A 【解析】句意：我们爬上了山顶，以便能更好地看到景色。考查目的状语从句。A. so that以便，表目的；B. as soon as一……就……，表时间；C. now that既然，表原因；D. as由于，表原因；当……时，表时间。本句表目的，根据句意语境，故选A。

Everything changed ________ quickly that I hardly had time to prepare.

A. such B. so C. very D. quite

B 【解析】试题分析：句意：一切改变的那么快，以至于我几乎没有时间去准备。so…that…如此的……以至于……，根据句意，故选B。

Teachers and parents______ allow the children to tell their own ideas.

A. can B. may C. should D. need

C 【解析】句意：老师和家长应该让孩子们说出自己的想法。考查情态动词辨析题。A. can能够，表可能性；B. may可能，表许可或猜测；C. should应该，用于提建议；D. need需要，多用于否定句、疑问句和if等条件句，做实意动词需用need to do结构。根据句意语境，本句是提建议，可知选C。

Unluckily, his left leg ______seriously in a football game last week.

A. hurt B. has been hurt C. was hurt D. is hurt

C 【解析】句意：不幸的是，他的左腿在上周的一场足球赛中受了重伤。考查被动语态。last week上个星期，用于一般过去时态，ACD三项都是现在时，均可排除。主语leg是动词hurt的受动者，需用被动语态；根据句意结构和语境，可知选C。

The greenhouse effect may cause the level of the sea______.

A. to rise B. rise C. rising D. to raise

A 【解析】句意：温室效应可能导致海平面上升。考查动词形式辨析题。cause使/迫使，一般接不定式的复合结构，即cause sb./sth. to do，可排除BD选项。动词raise表示举起、提起、提升、增加，后面必须接宾语，而rise强调自然“上升”，后面不接宾语。根据句意结构和语境，可知选A。

My father______in this school since he was 25 years old.

A. had worked B. worked C. was working D. has worked

D 【解析】句意：我父亲从25岁起就在这所学校工作。考查动词时态辨析题。since he was 25 years old. 从他25岁开始，since表示的是一段时间，用于现在完成时态。现在完成时态的结构是“have/has+现在分词”，根据句意结构，可知选D。