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【单选题】
IPv4 首部中填充字段的作用是 。A.
维持最小帧长
B.
保持 IP 报文的长度为字节的倍数
C.
确保首部为32比特的倍数
D.
受 MTU 的限制
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反馈参考答案：
举一反三
【单选题】When Forrest Gump was bullied by local kids, what did he do?
A.
He shouted back.
B.
He run away.
C.
He stood still and did nothing.
D.
He fought back.
【简答题】Besides helping people to refresh their mind on what have been learnt, examinations can also inculcate a spirit of ______.
【单选题】Which of the following statements about examinations in China is correct?
A.
People can make money out of examinations.
B.
Only students of today have to take examinations.
C.
Students have to learn more about history than about any other subjects.
D.
People have different opinions concerning the value of examinations.
【单选题】When Forrest Gump was bullied by local kids, what did he do?
A.
He shouted back.
B.
He ran away.
C.
He stood still and did nothing.
D.
He fought back.
【单选题】Which of the following statements is NOT mentioned in the passage?
A.
Examinations can motivate people to work hard and to be competitive.
B.
Examinations involve much preparation work.
C.
Through examinations, excellent people can be selected.
D.
Examinations have produced many people capable of their own fiel
【单选题】—Sir， can I pass the examinations this time？—That depends on you work hard enough or not. A．whatB
A.
—Sir， can I pass the examinations this time？ —That depends on____you work hard enough or not. A．what
B.
that
C.
whether
D.
how
【单选题】What did Bubba ask Forrest to do when they had a rest at night in the rain in Vietnam?
A.
to ask Forrest to give him some money
B.
to ask Forrst to go into shrimping business with him
【单选题】When did chewing gum become popular in the United States?
A.
In 1890.
B.
In 1819.
C.
In 1870.
D.
In 1817.
【单选题】We can't complain that children are cheating in examinations ______ adults themselves have set such a bad role model for them to follow.
A.
because
B.
unless
C.
when
D.
though
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