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【单选题】
The passage recommends those dealing with computers to______.A.
be reasonably doubtful about them
B.
check all their answers
C.
substitute them for basic thinking
D.
use them for business purpose only
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反馈参考答案：
举一反三
【单选题】As it is summer holiday, we have to adopt a _______ timetable for school activities. [ ]
A.
changeable
B.
movable
C.
flexible
D.
variable
【单选题】逻辑运算是最基本的基于“真 / 假”值的运算,也可以被看作是基于“ 1/0 ”的运算, 1 为真, 0 为假。关于基本逻辑运算,下列说法 不正确 的是
A.
“与”运算是“有 0 为 0 ，全 1 为 1 ”
B.
“或”运算是“有 1 为 1 ，全 0 为 0 ”
C.
“非”运算是“非 0 则 1 ，非 1 则 0 ”
D.
“异或”运算是“相同为 1 ，不同为 0 ”
【单选题】What made the author laugh?
A.
His own behavior
B.
His wife’s suggestion
C.
His changeable feelings.
D.
His wife’s sweet kiss.
【简答题】炸药的爆炸性能有()、()、爆速、()、爆热、爆稳。
【单选题】Mark is very set in his ways,hut john has a more ________ attitude to life。
A.
changeable
B.
flexible
C.
moveable
D.
casual
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