问题
单项选择题
罗阿丝虫病的临床特征是()
A．反复发作的淋巴管炎
B．乳糜尿
C．反复发作的游走性皮肤肿胀
D．暂时性失明
E．象皮肿
答案
参考答案：C
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罗阿丝虫病的临床特征是()
A．反复发作的淋巴管炎
B．乳糜尿
C．反复发作的游走性皮肤肿胀
D．暂时性失明
E．象皮肿
参考答案：C
| 阅读理解。 |
| In some parts of the United States, farming is easy. But farming has always been difficult in the northeastern corner of the country, which is called New England. New England has many trees and thin, rocky soil. Anyone who has wanted to start a new farm there has had to work very hard. The first job has been cutting down trees. The next job has been digging the stumps of the trees out of the soil. Then the farmer has had the difficult job of removing stones from his land. This work of removing stones never really ends, because every winter more stones appear. They come up through the thin soil from the rocks below. Farmers have to keep removing stones from the fields. Even today, farms which have been worked on for 200 years keep producing more stones. That is why stone walls are used instead of fences around New England fields. The stone walls are not high; a man can easily climb over them. But they keep the farmer's cows from joining his neighbor's cows. |
| 1. This selection explains _____. |
| A. how to make a stone wall in New England B. why there are many stone walls in New England C. which parts of New England first used stone walls D. how many fences there are in England |
| 2. According to this selection farming is difficult in New England because _____. |
A. the winter is very long there |
| 3. This selection says that the work of removing stones _____. |
| A. must be done again and again B. is usually done during the winter C. was more difficult before machines were used D. is easy after machines were used |
| 4. In New England, stone walls are used _____. |
| A. to protect the farmer's fields from thieves B. to keep the farmer's cattle from wandering away C. to provide privacy for the farmer's family D. to prevent the wind from blowing away the earth |