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【单选题】
下面关于线程操作的叙述中，正确的是 （ ）A.
pthread_join()函数用于将一个线程添加到指定线程组中，线程组通过主线程的线程id确定。
B.
pthread_deatch()函数用于将线程从主控线程分离，处于分离态的线程可自主回收线程资源。
C.
pthread_exit()函数用于退出线程，该函数的功能与进程中exit()函数的功能相同。
D.
在线调用pthread_cancel()函数终止线程，线程会立刻被杀死。
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举一反三
【简答题】We wore sun hats because it was very hot. It was ____________________ that we wore sun hats.
【单选题】Lucy was completely ______ after jogging in the hot sun all afternoon; she had little energy left.
A.
kicked out
B.
worn out
C.
handed out
D.
put out
【简答题】中国商务旅游者的特点有哪些?
【单选题】______, I shall still go outside.
A.
As the sun is hot
B.
Hot as is the sun
C.
Hot as the sun is
D.
Though is the sun
【简答题】The hot sun had caused the dough to double in size.
【单选题】______ I shall still go outside.
A.
As the sun is hot
B.
Hot as is the sun
C.
Hot as the sun is
D.
Though hot is the sun
【简答题】当碰撞发生时，安全带控制系统可在（ ）ms内将安全带收紧10~15cm.
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