长期强度

根据中英文提示，完成下列句子，每空一词（共10题，满分20分,每题2分）

小题1:这是他第一次考试不及格。

It was the first time that he ____　____ in the exam.

小题2:她让我打开窗户，让新鲜空气进来。

He _____ _____ ______ ______ the window and let some fresh air in.

小题3:有那么多工作要应付，这位老板好像工作上有麻烦了。

With so many jobs to deal with, the boss seemed to _____ _____ _____ his work.

小题4:我发现这帮人很难对付，我厌恶他们在大庭广众之下喧哗。

I find _____ hard _____ _____ _____ this pack of people. I hate them speaking loudly in public.

小题5:必须利用一切机会学好英语。

Every chance must ______ ______ ______ _____ to study English.

小题6:父亲总是问我学习的进展情况。

My father always asks me how I’m _____ ______ _____my study.

小题7:地理位置对方言的产生起了重要作用。

Geography _______ an important _______  _____ making dialects.

小题8:直到上星期天，他才意识到自己的错误。

He _____ ______ his mistake ______ last Sunday.

小题9:就是在昨天汤姆在公园里丢了他的表。

____ ____ yesterday ____ Tom lost his watch.

小题10:我深信你当时是故意捣乱, 目的是引起别人的注意。

I strongly believe that you were making trouble __________  _________ in order to attract others’ attention.

There are four basic skills in English learning — listening, speaking, reading and writing. Ms. Li suggests that students should spend 2.5 hours improving the four basic skills after class every week. According to Ms. Li’s form, Charles has spent        minutes in all (总计) practicing writing during the past three weeks.

A. 1.5                  B. 30              C. 90

下列现象中（）是发现溢流的一个可靠信号。

A、钻井液池液面升高

B、悬重发生变化

C、泵压下降

D、地层压力增大

一个质量为60kg的人，站在竖直向上运动着的升降机地板上，他看到升降机上挂着重物的弹簧秤示数为40N，如图所示。已知重物质量为5kg，g取10m／s²，求人对升降机地板的压力。

坚强智能电网以（）协调发展的坚强网架为基础。

A.交直流电网

B.各地电网

C.各级电网

D.跨区域电网