Question

The trees have been on the earth for millions of years.  小题1: Disease(疾病) is destroying trees. For example, in the 1970s, many trees in Europe were killed by disease.
小题2: This new danger attacks all the forests and woods of Europe from northern Sweden to southern Italy. First the branches turn yellow and brown. Then the trees’ leaves fall. The roots and the trunk shrink(萎缩). Finally the trees die. In the Black Forest in southern Germany, 75％of the trees have been destroyed or killed．
小题3: Nobody knows exactly, but it is probably air pollution or acid rain(酸雨). Factories, power stations and cars give off tons of smoke with acid into the air. Sunlight turns these into something harmful which fall with rain or snow onto the trees.
What can be done about acid rain? 小题4:
Acid rain doesn’t always fall on the countries which produce the pollution. The wind carries it from one country to another. Badly, the governments don’ t want to spend money on it if it won’ t harm the trees in their own countries.
小题5: The rainforests of Asia and South America are being cut down for firewood and building materials. Something must be done. If the trees die, we will, too.
根据材料内容，从下面五个选项中选出能填入文中空缺处的最佳选项，使短文意思通顺，内容完整。

A．What is killing the trees?

B．But today trees are in great danger.

C．Trees are also killed by people.

D．Now an even greater danger is destroying trees.

E. Why don’t the governments do something to save the trees?

Answer 1

小题1:B
小题2:D
小题3:A
小题4:E
小题5:C

试题分析：这篇短文主要介绍了树木现在处在危险之中，其原因有疾病造成的，还有污染和酸雨也威胁着树木的生命，同时人类的砍伐也是树木减少的原因。
小题1:根据后文Disease(疾病) is destroying trees疾病正在破坏树木，故选 B
小题2:根据后文This new danger attacks all the forests and woods of Europe from northern Sweden to southern Italy 可知又有一种新的危险在危害树木，故填D
小题3:根据后文回答Nobody knows exactly, but it is probably air pollution or acid rain(酸雨可知上文在问问题，故填A
小题4:根据下一段描述如果酸雨不伤害他们自己的树木政府就不想在上面花钱。故填E.
小题5:根据后文描述，树木为了取火和做建筑材料而被砍伐，可知人类也在消灭树木，故填C