[题目]Scientists thousands of chemicals before they decided on the right one in the end .A. tried out B. found outC. worked out D. turned out 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】Scientists thousands of chemicals before they decided on the right one in the end .

A. tried out

B. found out

C. worked out

D. turned out

【答案】A

【解析】try out尝试，试验；find out调查；work out计算，算出，锻炼；turn out证明是，原来是。

练习册系列答案

优秀生快乐假期每一天全新寒假作业本系列答案

假日英语暑假吉林出版集团股份有限公司系列答案

创新学习暑假作业东北师范大学出版社系列答案

暑假作业长江出版社系列答案

义务教育课标教材暑假作业甘肃教育出版社系列答案

快乐暑假河北科学技术出版社系列答案

相关题目

【题目】语法填空。

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

In Canada and the United States, people enjoy entertaining (请客) at home. They often invite friends over __【1】__ a meal, a party, or just for coffee and conversation.

Here are the __【2】__ (kind) of things people say when they invite someone to their home:

“Would you like to come over for dinner Saturday night?” “Hey, we __【3】__ (have) a party on Friday. Can you come?”

__【4】__ (reply) to an invitation, either say thank you and accept, or say you’re sorry and give an excuse: “Thanks, I’d love to. What time would you like me to come?” __【5】__ “Oh, sorry. I’ve tickets for a movie.”

Sometimes, __【6】__, people use expressions that sound like invitations but which are not real invitations. For example: “Please come over for a drink sometime.” “Why not get together for __【7】__ party sometime?” “Why don’t you come over and see us sometime soon?”

They are really just polite ways of __【8】__ (end) a conversation. They are not real invitations because they don’t mention a specific (确定的) time or date. They just show that the person is trying to be __【9】__ (friend).To reply to expressions like these, people just say “Sure, that would be great!” or “OK. Yes, thanks.”

So next time when you hear __【10】__ sounds like an invitation, listen carefully. Is it a real invitation or is the person just being friendly?

【题目】What he said ________ a great effect upon us.

A．have B．does have C．having D．to have

【题目】根据语境在空白处填入适当的内容或括号内单词的正确形式。

【1】As soon as ________ concert film This Is It was released on October 28th, it became ________ great success in all big cinemas across the planet.

【2】As a punishment she was not permitted ________ part in any school activity in a week.

【3】The advantage of living on the top of the building is that I can get a good ________ of the whole city.

【4】Tom was about to close the window ________ his attention was caught by a bird.

【5】Much of the farmland is under water；________ the grain, most of that has been ruined.

【6】The young dancers looked so charming in their beautiful clothes that we took ________ pictures of them.

【7】The reason ________ he gave for his absence is ________ he was drunken.

【8】Born into a family with three brothers, David was ________ to value the sense of sharing.

【9】—I'm sorry to interrupt you, Sir. May I ask you a favor?

—Yes, ________.

【10】—What do you think of Mr. Wang?

—No one can get along well with him. He is ready to find fault ________ others.

【11】They are leaving for Hangzhou in ten days—________ other words， next Friday.

【12】When I came to myself, I found myself at hospital and ________ a group of people.

【13】There is much chance ________ Bill will recover from his injury in time for the race.

【14】As for me, I don't like this ________ novel.

【15】—Jimmy had a lot of parties recently.

—Yes, that might ________ why he din't do well in the test.

【题目】It was after he got what he had desired he realized it was not so important.

A. that

B. when

C. since

D. as

【题目】Jim has retired, but he still remember the happy time _______ with his students.

A. to spend B. spend C. spending D. spent

【题目】In art criticism, you must assume the artist has a secret message________within the work.

A.to hide B. hidden

C. hiding D. being hidden

【题目】阅读理解

I was asked in an email about learning idioms in a foreign language. Maybe I am different from most people，but I do not bother with them. To me they are kind of dessert of language learning. They come at the end of a meal. Once you have filled up with the key words and phrases that are used in a variety of situations，then you can add a few idioms. And by that time, you will be able to pick them up naturally anyway.

I find that many learners have trouble with idioms，as if repeating some very colloquial expressions is going to upgrade how they sound in a language. In fact, it is the opposite. Idioms are difficult to use correctly.

Yes，occasionally you hear idioms and do not understand. But，in my experience，there are always situations where you do not understand. It is best to focus on the most important words，what they mean and how they are used. Certainly，it is best for a nonnative speaker to stick to standard speech.

Some teachers even try to teach the “real language”．Then you hear nonnative speakers saying things like “I goanna”, “You wane” etc.

You will learn all the idioms you need just by exposing yourself to the language. In general，you can save any phrase that you find interesting，and if that includes idioms，go to it. But I would not make any special effort to go after idioms. I，in fact，avoid them. If I come across something in Russian that strikes me as a particularly idiomatic use of words，I just leave it span>aside; do not even bother trying to learn it. If it keeps on appearing，then I will learn it.

【1】In the writer's opinion，when one learns a new language，one should learn its idioms ________.

A．at the beginning B．on one's own

C．in the end D．without help

【2】The underlined word “colloquial” in Para.2 means “________”．

A．oral B．informal

C．formal D．written

【3】It can be inferred from the passage that ________.

A．idioms are the most important part in a language

B．the writer is not very willing to use idioms

C．nonnative speakers should learn more idioms

D．there are no ways to master idioms

【4】How did the writer develop the passage?

A．By inferring. B．By comparing.

C．By listing examples. D．By giving explanations.

【题目】语法填空

(2017·新课标全国卷Ⅱ) In 1863the first underground passenger railway in the world opened in London. It ran for just under seven kilometers and allowed people to avoid terrible 1 (crowd) on the roads above as they travelled to and 2 work. It took three years to complete and was built using an interesting method. This included digging up the road, 3 (lay) the track and then building a strong roof over 4 top. When all those had been done, the road surface was replaced.

Steam engines 5 (use) to pull the carriages and it must have been 6 (fair)unpleasant for the passengers, with all the smoke and noise. However, the railway quickly proved to be a great success and within six months, more than 25,000 people were using 7 every day.

Later, engineers 8 (manage) to construct railways in a system of deep tunnels (隧道）, which became known to the tube. This development was only possible with the 9 (introduce) of electric-powered engines and lifts. The central London Railway was one of the most 10 (success) of these new lines, and was opened in 1900. It had white-painted tunnels and bright red carriages, and proved extremely popular with the public.

试题分类