单选题
阅读下面短文，从短文后所给的[A]、[B]、[C]三个选项中选出能填入相应空白处的最佳选项。

Many years (Example:{{U}} (0) {{/U}}) , life was {{U}}(41) {{/U}} than it is today. People didn't have modem machines. There was no modem medicine, {{U}}(42) {{/U}} .
Life today has brought new problems. One of the biggest is pollution ( 污染 ). Water pollution has {{U}}(43) {{/U}} our rivers and lakes dirty. It kills fish and affects( 影响 )our drinking water. Noise pollution makes us talk louder and {{U}}(44) {{/U}} . Air pollution is the most serious kind of pollution. It affects {{U}}(45) {{/U}} living thing in the world.
Cars, planes and factories all pollute our air every day.
Many countries are making laws(法律) to stop pollution. Factories, must from now on, clean their water {{U}}(46) {{/U}} away, they mustn't sent out dirty smoke into the air.
We need to do many other things. We should put waste things in the dustbin(垃圾箱) {{U}}(47) {{/U}} throwing them on the ground. We can go to work by bus {{U}}(48) {{/U}} with our friends in the same car. If {{U}}(49) {{/U}} people driving, there will be {{U}}(50) {{/U}} pollution.

A、

[A] more hard
B、

[B] much harder
C、

[C] train

【正确答案】 B

【答案解析】[解析] 句中有一个than比较级的标志，又因为 hard的比较级是在其后面加er。

A、

[A] either
B、

[B] too
C、

[C] also

【正确答案】 A

【答案解析】[解析] 这句话的意思是“人们没有现代化的工具，也没有先进的医疗条件”。either做副词的时候，意为“也(不)…”。too用于肯定句。

A、

[A] changed
B、

[B] made
C、

[C] done

【正确答案】 B

【答案解析】[解析] 这句话的意思是“水污染使江河湖泊受到污染”。made sth．+形容词原形的意思是“使某物怎么样”。

A、

[A] feel happy more quickly
B、

[B] feel sad more slowly
C、

[C] become angry more easily

【正确答案】 C

【答案解析】[解析] 根据句意“噪音污染使我们必须大声地说话，我们因此而变得易怒”。前两项不符合题意。

A、

[A] all
B、

[B] most
C、

[C] every

【正确答案】 C

【答案解析】[解析]这句话的意思是“它影响了世界上任何一种生物”。因为thing不是复数形式，所以不能选all。

A、

[A] before it is thrown
B、

[B] after it is thrown
C、

[C] until it is thrown

【正确答案】 A

【答案解析】[解析] 根据句意“许多国家制定法律用来阻止污染，从现在开始，一些工厂在排除污水之前，必须对它们进行有效的清除”。

A、

[A]instead
B、

[B] instead of
C、

[C]besides

【正确答案】 B

【答案解析】[解析] 根据本文的主旨，最后一段说的主要是我们为了减少污染的发生，我们应该把废物扔在垃圾箱，而不要像以前那样随便扔在大路上。

A、

[A] and
B、

[B] or
C、

[C] but

【正确答案】 B

【答案解析】[解析] 参照上题，为了减少污染的发生，我们尽量乘公共汽车去上班或者和我们的明友坐一辆车去上班。

A、

[A] there is few
B、

[B] there is more
C、

[C] there are fewer

【正确答案】 C

【答案解析】[解析] 根据句意“如果人们驾驶的车越少；污染也就越少”。

A、

[A] little
B、

[B] less
C、

[C] least

【正确答案】 B

【答案解析】[解析] 参照上题可知用比较级。