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【单选题】
Delivery to carriers ______ the transit of the goods even though they are employed by the buyer，unless the intention of the parties is clearly to the contrary．A.
ends
B.
completes
C.
does not end
D.
does not complete
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皮皮学刷刷变学霸
举一反三
【单选题】—Must I finish the work today, Mom? —No, you _____. You can finish it tomorrow. [ ]
A.
mustn't
B.
needn't
C.
shouldn't
D.
can't
【简答题】人的思维是至上的，又是非至上的。（ ）
【简答题】一个 PN + 型的二极管,电子和空穴的寿命分别为 τ n 和 τ p ,在外加正向直流电压 V 1 时电流为 I 1 ,当外加电压反向为- V 2 时,器件会经历一段反向恢复过程,这主要是由正向导通时存储在( )型中性区中的非平衡少子造成的,该非平衡少子的总量为( )(选择填空,P,N, τ n × I 1, τ n × V 1 )
【单选题】—Must I finish my homework now, Mom? —No, you _______.You can do it tomorrow.
A.
can’t
B.
needn’t
C.
mustn’t
【单选题】—If a good program on TV,could I watch it,Mom? —Sure,but you must finish your homework first [ ]
A.
there is
B.
there is going to be
C.
there was
D.
there have
【简答题】“人的思维是至上的，又是非至上的”。
【单选题】----Must I finish the work today, Mom? ----No, you _______________. You can finish it tomorrow.
A.
mustn’t
B.
can’t
C.
needn’t
D.
shouldn’t
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