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【单选题】
用户级线内核级线程的区别是?()A.
用户级线程可以在没有内核级线程的情况下独立存在
B.
用户级线程没有TCB
C.
在执行用户内核级线程可以在没有用户级线程的情况下独立存在
D.
内核级线程没有用户栈
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【单选题】The postman comes at 6:30 in the morning, ____ time I am usually fast asleep.
A.
when
B.
at which
C.
which
D.
that
【简答题】Look! Linda is running ________________(fast) and ________________(fast). I am sure she will win.
【单选题】I am busy ____ for the entrance examination, so I can’t help ____housework at home.
A.
.preparing; doing
B.
preparing; to do
C.
.to prepare; doing
D.
.to prepare; to do
【单选题】— Are you going to Beijing by plane? — It's fast, but expensive. So I am not sure. I_____ take a train. [ ]
A.
should
B.
may
C.
must
D.
will
【单选题】—“Crash diets” make us lose weight fast and I am all into that. —But it_______better to work out.
A.
had
B.
would be
C.
wouldn’t have been
D.
must have been
【简答题】阅读理解。 There's no doubt that fast food has become an important part of modern life, especially among agers. According to research, in the UK 80% of meals are eaten outside the home. And more than 5...
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