计算：-22+8sin45°-2-1+（3.14-π）0．_爱下问搜题

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问题解答题

计算：-2²+

8

sin45°-2^-1+（3.14-π）⁰．

答案

原式=-4+2

2

•

2

2

-

1

2

+1

=-4+2-

1

2

+1

=-

3

2

．

单项选择题

The riot is said______by the government's negligence of the people's welfare.

A．to have been caused

B．being caused

C．to be caused

D．to cause

判断题

施琅制定的《约法三章》集中了“抚”的精髓。