_______, you would have met him.
A. If you came earlier
B. If you should come earlier
C. Had you come earlier
D. Should you come earlier
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__________, the crops would be saved.
A. Could it rain
B. If it had rained
C. If it rained
D. Should it rain
It’s high time we ______ cutting down the rainforest.
A. stopped
B. had to stop
C. shall stop
D. stop
以3为实部4为虚部,Python复数的表达形式为___。
IDLE菜单中将选中区域注释的快捷键是
Alt+3
B. Alt+G
C. Alt+Z
D. Alt+4