方程x2-1=0的解是：______．_爱下问搜题

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问题填空题

方程x²-1=0的解是：______．

答案

移项得，x²=1，开方得，x=±1．

单项选择题

钡餐检查可见“跳跃”征的是()

A．慢性阑尾炎

B．溃疡型肠结核

C．阿米巴性肠炎

D．溃疡性结肠炎

E．局限性肠炎

填空题

CONVERSATION 2 (Questions 5-8)

Jeff has lived in New York for (5) years.
Jeff doesn’t like (6) , (7) and (8) of New York.

CONVERSATION 2(Questions 5-8)

The woman is working at the campus (5) office.
The man can work at least (6) hours a week but not more than (7) hours a week from (8) on.