The trees have been on the earth for millions of years.  小題1: Disease(疾病) is destroying trees. For example, in the 1970s, many trees in Europe were killed by disease.
小題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(萎縮). Finally the trees die. In the Black Forest in southern Germany, 75％of the trees have been destroyed or killed．
小題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? 小題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.
小題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.
根據(jù)材料內(nèi)容，從下面五個選項中選出能填入文中空缺處的最佳選項，使短文意思通順，內(nèi)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?

小題1:B
小題2:D
小題3:A
小題4:E
小題5:C

試題分析：這篇短文主要介紹了樹木現(xiàn)在處在危險之中，其原因有疾病造成的，還有污染和酸雨也威脅著樹木的生命，同時人類的砍伐也是樹木減少的原因。
小題1:根據(jù)后文Disease(疾病) is destroying trees疾病正在破壞樹木，故選 B
小題2:根據(jù)后文This new danger attacks all the forests and woods of Europe from northern Sweden to southern Italy 可知又有一種新的危險在危害樹木，故填D
小題3:根據(jù)后文回答Nobody knows exactly, but it is probably air pollution or acid rain(酸雨可知上文在問問題，故填A(yù)
小題4:根據(jù)下一段描述如果酸雨不傷害他們自己的樹木政府就不想在上面花錢。故填E.
小題5:根據(jù)后文描述，樹木為了取火和做建筑材料而被砍伐，可知人類也在消滅樹木，故填C
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