虱传播战壕热是由于病原体五日热立克次体在A．以上情况均可发生

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问题单项选择题

虱传播战壕热是由于病原体五日热立克次体在

A．以上情况均可发生

B．虱体表面大量繁殖

C．体内经卵传递

D．虱血淋巴中大量出现

E．虱胃内或上皮细胞表面大量繁殖

答案

参考答案：E

填空题

用括号中所给单词的适当形式填空。

1. His illness is even ________ (bad) than I thought it would be.

2. Tree-planting Day is on the ________ (twelve) of March every year.

3. This kind of shampoo can make your hair ________ (shine).

4.Now the famous singer ________ (most)plays his own songs.

5. There are two ________ (well) in the small village. People there get water from them.

单项选择题

带裙房的高层建筑下的大面积整体筏形基础，其主楼与相邻的裙房柱的差异沉降不应大于跨度的（）

A.1/100

B.1/1000

C.3/1000

D.2/1000