______,足够我吃好几顿的。
A.这么多包了饺子
B.包了这么多饺子
C.饺子这么多包了
D.这么多包饺子了
参考答案:B
把甲、乙两个电阻串联接入某电路中,它们消耗的电功率分别为P1和P2.若将乙电阻单独接入另一个电路,已知后来电路电源两端电压为原电路电源两端电压的两倍,则乙电阻在后来电路中所消耗的电功率P2′=______.
The maths teacher demanded that all the students _______ the examination paper within one and a half hours.
A.would finish
B.finished
C.finish
D.could finish