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【简答题】
在一个射击游戏中,射手可打三枪,一枪打鸟,一枪打鸡,一枪打兔子,规则是命中不少于两枪者获奖。 试用与非门设计一个判别得奖电路。 解:1设鸟、鸡、兔分别用变量A、B、C表示;1表示枪命中,0表示没有命中;2用Y表示结果,1表示得奖,0表示不得奖。
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举一反三
【单选题】I have aunts, and my aunt works in Nanjing.
A.
two; two
B.
two; second
C.
second; two
D.
second; second
【单选题】There was a second knock at the door. It was the second time I_____ that afternoon.
A.
was interrupted
B.
was interrupting
C.
had 'interrupted
D.
had been interrupted
【单选题】Would you kindly tell me ______ ?
A.
how can I get to the Second Hospital
B.
how I can get to the Second Hospital
C.
where I can get to the Second Hospital
D.
whether can I get to the Second Hospital
【单选题】在半殖民地半封建的近代中国,社会矛盾呈现出错综复杂的状况。近代中国社会的性质和占支配地位的最主要矛盾,决定了中国革命的首要对象是,这一推翻的革命是( )。
A.
民主革命
B.
民族革命
C.
阶级革命
D.
社会革命
【单选题】The cake is delicious, and I would like ___________ one.
A.
a second
B.
the second
C.
second
【单选题】Contrary to what I had expected, he lost for ______.
A.
second time
B.
a second time
C.
second times
D.
the second time
【简答题】There was a second knock at the door．It was the second time I＿＿＿that afternoon．
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