【单选题】【消耗次数：1】
Scientists say it may be five or ten years __________ it is possible to test this medicine on human patients.
①
since
②
before
③
after
④
when
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相关题目
【单选题】
After ten years, all these youngsters became____.
①
grown-up
②
grown-ups
③
growns-ups
④
growns-up
【单选题】
When my own son was five years old, I became （ ）for another baby.
①
eager
②
desire
③
yearn
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wish
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Doctors have said that as many as 50% of patients dont take medicine ______.
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like directed
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so that directed
【单选题】
Doctors have said that as many as 50% of patients dont take medicine ______.
①
like directed
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to be directed
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④
so that directed
【单选题】
—It took me ten years to build up my business, and it almost killed me.—Well, you know what they say. _____.
①
There is no smoke without fire.
②
Practice makes perfect
③
All roads lead to Rome
④
No pains, no gains
【单选题】
When he came back after an absence of 20 years, he found his hometown completely ____. ?
①
changing ?
②
to be changed ?
③
to change ?
④
changed ?
【单选题】
Its the second time that I __________ in Shanghai ！ What great changes have taken place in Shang Hai. It is ten years since I __________ it last time.
①
have been ； left
②
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③
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随机题目
【单选题】
在下面的叙述中正确的是？
①
线程是比进程更小的能独立运行的基本单位
②
引入线程可提高程序并发执行的程度，可进一步提高系统效率
③
线程的引入增加了程序执行时时空开销
④
一个进程一定包含多个线程