|
C. to our liking
D. unfairyly
30. He always
［
declares his opinion
］
about everything.
A. speaks out
B. speaks at
C. speaks to
D. speaks for
Ⅱ
.
认真阅读下面两篇短文，每篇短文后有五个问题，根据短文的内容从四个选项中选出一个最佳答案。
(
每小题
1
分，共
10
分
)
Passage 1
Since the earliest times, trees have always been very useful and important to man who made use of them in many ways. Even today trees continue to serve man in so many ways.
Trees provide man with fruits and building materials in the form of wood. Without trees it would be impossible to build houses, boats and even bridges. Furniture such as tables, chairs and beds is made of wood.
In the tropics where it is very hot throughout the year, trees protect man from the terrible heat. They are also useful in preventing good and rich top soil from being washed away during heavy rains which are so common in the tropics.
If there were no trees or vegetation of some kind to hold back the soil with their roots, heavy rain would wash away the rich surface soil that is so important and necessary to agriculture. The result is that the land becomes a desert.
There are so many desert areas in the world. A long time ago these desert areas must have been very rich fertile areas, but since our ancestors in the distant past did not have enough knowledge about science of nature, they cut down all the trees in the areas where they lived and never planted new ones. By and by, the rich surface soil was blown away and washed away by strong winds and heavy rains. In the end the land was turned into useless deserts where nothing could grow.
31. According to the passage,______.
A. ancient man did not know how to make use of trees
B. trees are not as useful now as they were in the pas
C. trees are more useful in the past than they are now
D. men have always found trees very useful
32. According to the passage, some desert areas were once ______.
A. fertile lands
B. covered by icebergs
C. very cold
D. very dry and useless lands
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