口算。1-0.3=3.08+0.9=1.7-0.8=2.19+0.91=6.07_爱下问搜题

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问题口算题

口算。

1-0.3=

3.08+0.9=

1.7-0.8=

2.19+0.91=

6.07-1.99=

答案

0.7；3.98；0.9；3.1；4.08

选择题

The door _______ open, no matter how hard she pushed.

A．shouldn‘t

B．couldn't

C．wouldn't

D．mightn't

名词解释

胸膜腔