题目内容

半加器与全加器的区别在于半加器无进位输出，而全加器有。

A. 对
B. 错

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二进制译码器的每一个输出信号就是输入变量的一个最小项。

A. 对
B. 错

I dare climb this tall tree,_______?

A. do you
B. dare you
C. so do you
D. do you dare

Autumn coming, down ___________.

A. do the leaves fall
B. the leaves will fall
C. fall the leaves
D. with the leavesfall

Now ______ Wang's turn to do the report.

A. there is
B. is going
C. comes
D. has come