搜题请搜索小程序“爱下问搜题”
问题 选择题

有10袋白糖，其中9袋每袋500g，另1袋不是500g，但不知道比500g重还是轻，用天平称，至少（　　）次就能保证把它找出来．

A．3

B．4

C．5

D．6

答案

根据以上分析可知，要找出次品需要的次数是5次．

故选：C．

填空题

首字母填空。

     Zhalong is a n__1__ reserve in Heilongjiang in northeast China. It's one of the w__2__ most important wetlands. The area is a great p__3__ for wildlife. It's the ideal home for different kinds of plants, fish and

b__4__. Many birds live there. There are a lot of fish in the wetlands, and the birds catch t__5__ for food.

     Each year many people go there to w__6__ the rare red-crowned cranes, b__7__ Zhalong Nature

Reserve has an important living a__8__ for them.Many people don't understand the i__9__of the wetlands

. We should help them understand and make them take a__10__ to protect wildlife.
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单项选择题

患者，心悸，善惊易恐，坐卧不安，舌苔薄白，脉象虚弦，属下列何种证候（）

A.心血不足

B.心虚胆怯

C.饮邪上犯

D.心阴不足

E.心阳衰弱
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