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问题 选择题

下列运算：①a3+ a3= a6；②（- a3）2= a6；③（-1）0=1；④（a+b）2=a2+b2；⑤a3·a3= a9；⑥(-ab2)3=ab6。其中正确的有[ ]

A.1个

B.2个

C.3个

D.4个

答案

答案：B

填空题

根据句意和首字母提示。完成单词。

1. The magazine can't  i _____ her. She doesn't like it at all.

2. Mother often tells me to be h _____ so I never tell lies.

3. She has a kind h _____ and she is always ready to help others.

4. There are many different c _____ of animals.

5. People like apples because they t _____ good.
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单项选择题

下列哪种是尿毒症患者血液系统的临床表现（）

A.低色素、小细胞性贫血

B.白细胞出现中性粒细胞增加

C.血小板异常增多

D.贫血常为轻、中度

E.促红细胞生成素增加
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