【单选题】【消耗次数：1】
Before she left to have a holiday, she_______ hard.
①
worked
②
has worked
③
had worked
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相关题目
【单选题】
Had he worked hard, he _____ the exams.
①
must have got through
②
would have got through
③
would get through
④
could get through
【单选题】
If he had worked harder, he ___.
①
would succeed
②
had succeeded
③
should succeed
④
would have succeeded
【判断题】
Before he began to study in the university, he had worked in a company for three years.
①
正确
②
错误
【单选题】
She_______ the door before she goes away.
①
had locked
②
is locking
③
has locked
④
was locking
【单选题】
The boy worked hard ______ he could get the prize.
①
so that
②
so as to
③
so as
④
in order to
【单选题】
___ is often the case, we have worked out the production plan.
①
Which
②
When
③
What
④
As
【单选题】
-We’ve worked for a long time, what about stopping to have a rest? -_____________________.
①
A. I like it.
②
A. You are wonderful.
③
A. That’s a good idea.
④
very good
【单选题】
-Weve worked for a long time, what about stopping a while to have a rest?-_____________________.
①
I like it.
②
You are wonderful.
③
Thats a good idea.
④
ok
【单选题】
When I worked as the general manager of the firm, I sometimes had ___ to visit London on business.
①
opportunity
②
possibility
③
occasion
④
chance
随机题目
【单选题】
下列关于非竞争性拮抗药的描述中，不正确的是：
①
与激动药不争夺同一受体
②
可使激动药量-效曲线右移
③
能与受体发生不可逆结合的药物也能产生类似效应
④
不能抑制激动剂量-效曲线最大效应
⑤
与受体结合后能改变效应器的反应性
【单选题】
1. 肾上腺素作用的翻转是指( )
①
给予β受体阻断药后，再使用肾上腺素，出现的升压效应
②
给予α受体阻断药后，再使用肾上腺素，出现的降压效应
③
肾上腺素具有α.β受体激动效应
④
收缩压上升,舒张压不变或下降
⑤
由于升高血压,对脑血管的被动扩张作用
【单选题】
有机磷农药中毒时的处理方法错误的是 ( )
①
将患者移出中毒现场
②
经口中毒者应抽出胃液和毒物并反复洗胃
③
及早使用抗胆碱酯酶药
④
及早足量使用atropine
⑤
肌注氯解磷定