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【简答题】
可以用( )位二进制数表示十六进制中的所有数码。
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【单选题】If you are satisfied with the service, you can give the waiter a _______.
A.
tip
B.
thank you
C.
praise
D.
hand
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【简答题】阅读理解 Have you ever stayed up late? If so, you know that not getting enough sleep can make you tried and grumpy . Not sleeping enough sleep can also make it harder to think clearly the next day. Sleep ...
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