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问题 单项选择题

酶的比活力指( )

A．以某酶的活力作为1来表示其他酶的相对活力
B．任何两种酶的活力比值
C．每毫升反应混合物的活力单位
D．每毫克酶的活力单位
E．每毫克蛋白质的酶活力单位

答案

参考答案：E

完形填空

根据短文内容及首字母提示，填上所缺单词，使句意完整

Every mother is great, so is my mother. My mother is a common worker. But I love h___小题1:very much. My mother likes t_小题2:stories. She also likes helping others. So she is popular. She is hard-working like many other mothers. Whenever she is at home or at work, she is always busy. On weekens, she often c__小题3:our house, s_小题4: our house is clean and tidy. And she likes planting f___小题5: ,too. She often says, “Flowers are beautiful. Planting flowers is fun and exciting. Flowers can make the air fresh and keep the house beautiful.”She often gives flowers t_小题6:her friends,too.

She is strict in my study.She oftens to me, “Study is the most important thing to a student. You must study h__小题7: Then you can do more and better for others and yourself.” And she is also kind to me. Every day she takes g___小题8: care of me. She often helps me. When I have trouble, I’d like to ask her for help.

This is my mother. She is the greatest and beautiful mother in my eyes.
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多项选择题

小儿腹泻的护理措施包括下列哪些（）

A.感染性腹泻要床边隔离

B.保持口腔清洁

C.保持臀部清洁

D.观察大使次数、性状、颜色、气味及数量，准确记录出入量

E.必须卧床休息
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