Question

【题目】March 20th is World Water Day every year. According to a report from the United Nations, more than half of the world's major rivers have serious water loss and are polluted.The Yellow River, the world's fifth longest river, watered some of the oldest farms on earth. But now it has a serious problem. _【1】_In most of the past 35 years, it didn't reach the sea.The Nile in Egypt, running 6, 650 km, is the longest river in the world. __【2】__ Now it is down to 2 billion m' or so. Australia's Murray River reaches the sea only every other year. One fifth of America's Rio Grande has no water, either._ 【3】__Mostly it's damming (筑坝) and global warming that make rivers dry.

_【4】_ Now about 45, 000 of them lie across the world's rivers. They hold back around 15% of the world's fresh water from running to the sea.Global warming is making things worse. Warmer weather takes water away. The glacier (冰川) are becoming smaller. _【5】Global warming has had certain effects on water sources (源头). Droughts (干旱) happening around the world make people pay more attention to this fact.

Answer 1

【答案】

【1】F

【2】C

【3】D

【4】A

【5】B

【解析】

试题分析：短文大意：每年的3月20日是世界水日。根据美国的一个报道，世界上有一半多的主要河流严重缺水或被污染。黄河，世界上第五大河，在过去的35年里，就没有流到大海里。同意，埃及的尼罗河，世界上最长的河流，由原来每年的32000000000平方米的流量降低到2000000000.等等。是说明原因造成这样的现象？主要是由于筑坝和全球变暖导致河流干涸。

【1】F联系上句But now it has a serious problem. 和_In most of the past 35 years, it didn't reach the sea.可知这里是举了一个可怕的例子，所以选F。

【2】C联系上句The Nile in Egypt, running 6, 650 km, is the longest river in the world. 和下句Now it is down to 2 billion m' or so. 可知这里该是在说过去它每年要带来32000000000立方米的水。所以选C。

【3】D联系下句Mostly it's damming (筑坝) and global warming that make rivers dry.可知这里是在说它是怎样发生的，所以选D。

【4】A联系下文Now about 45, 000 of them lie across the world's rivers. They hold back around 15% of the world's fresh water from running to the sea.可知该选A。

【5】B 联系上句The glacier (冰川) are becoming smaller.和下句Global warming has had certain effects on water sources (源头)可知该选B。