某种中草药含甲.乙.丙.丁四种草药成分.这四种草药成分的质量比是0.7∶1∶2∶4.7现在要配制这种中药1400克.这四种草药分别需要多少克?设每份为x克.根据题意.得．题目和参考答案——青夏教育精英家教网—

题目内容

某种中草药含甲、乙、丙、丁四种草药成分，这四种草药成分的质量比是0.7∶1∶2∶4.7现在要配制这种中药1400克，这四种草药分别需要多少克？设每份为x克，根据题意，得________．

答案：
解析：

0.7x＋x＋2x＋4.7x＝1400

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Please do me a favor—________the carrots and put them in the pot.

A.to cut up B.cut up C.cutting up D.cuts up

The Adventures of Huckleberry Finn by Mark Twain is one of the most famous American novels. Published in 1884, it was one of the first novels in the USA written in common, everyday language. For example, using non-standard English, Twain wrote, ‘I haven’t got any money,’ to mean ‘I do not have any money’. In this way, Twain made his characters very true to life.

The story is told by Huckleberry Finn, called Huck for short, who runs away to escape his abusive father. At first, Huck goes to a small island in the middle of the Mississippi River. There, he finds Jim, a black slave who has run away to escape slavery. The two of them stay on the island for a few weeks and become friends, but they must leave because Huck learns that people are looking for Jim. They decide to travel on a raft on the Mississippi River to reach the Ohio River, which will take them north to a state that does not allow slavery.

During their journey, Huck and Jim visit many places along the river and meet many different people. Unfortunately, most of the people they meet are not good. For instance, Huck and Jim meet a family, the Grangerfords, who have been fighting with another family, the Shepherdsons, for so many years that nobody remembers how the fight began. While Huck stays with the Grangerfords, the fighting starts again, and several members of both families are killed. Later, Huck and Jim meet the King and the Duke, two men who take control of their raft and make money by tricking people. During the confusion following one of these tricks, Huck and Jim escape with their raft.

Although the people Huck and Jim meet are bad, they are also funny. Mark Twain used humor to show readers the problems of American society in the 1800s. More importantly, despite all of the bad things that happen to Huck and Jim, the novel has a happy ending for both of them. Jim gets his freedom because his owner has died and set him free in her will, and Huck learns that his father has died, so he is also safe.

The Adventures of Huckleberry Finn is an adventurous and humorous story, and it teaches modern readers a lot about American society in the 1800s.

1. How was The Adventures of Huckleberry Finn different from earlier novels? (No more than 9 words) (2 marks)

2.What kind of people do Huck and Jim meet? (No more than 16 words)

(3 marks)

3.What happens to Huck and Jim in the end?

(No more than 8 words) (2 marks)

4.What's the main idea of the passage?

(No more than 11words) (3 marks)

---Please don’t make any noise. ---_________. I’ll be as quiet as a mouse.

A. Yes, I won’t B. No, I won’t

C. No, I will D. Yes, I will.

With its fascinating and artistic accompanying music, singing and costumes, the Peking Opera is China’s national opera. Full of Chinese cultural facts, the opera presents the audience with an encyclopedia（百科全书）of Chinese culture, as well as developing stories, beautiful paintings, magnificent costumes, graceful gestures and martial arts. Since Peking Opera enjoys a higher reputation than other local operas, almost every province in China has more than one Peking Opera troupe. Opera is so popular among Chinese people, especially seniors, that even “Peking Opera Month” has been declared.

Peking Opera’s main tune originated from Xipi and Erhuang in Anhui and Hubei and, over time, techniques from many other local operas were incorporated into Peking Opera.

It is believed that Peking Opera gradually came into being after 1790 when the famous four Anhui opera troupes came to Beijing. Peking Opera experienced fast development during the period of Emperor Qianlong and the infamous Empress Cixi, eventually becoming more accessible to the common people.

In ancient times, Peking Opera was performed mostly on stage in the open air, teahouses or temple courtyards. Since the orchestra played loudly, the performers developed a sharp style of singing. The costumes were a gorgeous collection of sharply contrasting colors to stand out on the stage lighted only by oil lamps. Peking Opera is a harmonious combination of the Grand Opera, ballet and acrobatics （杂技），consisting of dance, dialogue and martial arts.

The Peking Opera band mainly consists of an orchestra and percussion（打击乐器）band. The former frequently accompanies peaceful scenes while the latter provides the right atmosphere for battle scenes. The orchestral instruments include the Erhu, Huqin, Yueqin, Sheng, Pipa and other instruments. The band usually sits on the left side of the stage.

Title: 1..

2.	More than 200 years long
3.	It came into being after 1790 when the four 4.. came to Beijing.
Its main tune 5.. on Xipi and Erhuang.
Its techniques adopted many other local operas.
Artistic 6..	A harmonious combination of the Grand Opera, ballet and acrobatics, consisting of dance, dialogue and 7.
Mostly performed on stage in the open air, teahouses or temple courtyards
8. of singing
The costumes looks luxury and brilliant.
The Peking Opera band	An orchestra	Atmosphere	9.
Peaceful scenes	Erhu, Huqin, Yueqin, Sheng, Pipa and so on.
A percussion	Battle scenes	Not mentioned
Influence	Well-received by Chinese people, especially 10.

If you are looking for a creative solution to a piece of work or a school assignment，don’t lock yourself up in a quiet room.

A new study suggests that moderate background noise is a better spur(动力) to creative thinking than the sound of silence，Time magazine reported.

A paper published in the Journal of Consumer Research says that the perfect working environment should buzz(嗡嗡作响)with a little noise.

Researchers found that test subjects were at their most creative when background noise was measured at 70 decibels，the level one might find in a busy coffee shop.

A nearly silent environment(50 decibels)was too quiet. Turning up the volume to 85 decibels (a jackhammer tearing up the pavement outside your building) was counterproductive-the noise became a distraction.

The researchers asked 65 students at the University of British Columbia，Canada，to perform various creative tasks while noises recorded at a roadside restaurant were played in the background.

In one experiment，scientists asked participants to brainstorm ideas for a new type of mattress(气垫). Test subjects had the most successful discussions when the noise in the background was noticeable but not too loud.

While a quiet environment may make it easier to read a book. the authors of the study say that moderate background noise creates just enough of a distraction to force people to think more imaginatively, without breaking their focus so completely that they can’t think at all.

Should we all head for Starbucks to get creative? Not necessarily.

Researchers found limited work time surrounded by the low-level noise of a coffeehouse is what really stimulates creativity.

Equally, working in a care environment isn’t good for everybody. The productivity boost was most obvious among those who were naturally creative to begin with.

1.The recommended level of background noise is__________.

A. 50 decibels B. 65 decibels

C. 70 decibels D. 85 decibels

2.Why is moderate background noise good for creativity?

A. It relaxes people and stops them from getting bored.

B. It can help people to focus on a subject.

C. It can absorb sudden noises that cause distraction.

D. It pushes people to use their imagination but doesn’t reach a level that disturbs them.

3.According to the last three paragraphs，___________.

A. the low—level noise of a coffeehouse may be too loud for some people to work with

B. if a person is not a creative type, then background noise may not be of so much help to them

C. a person’s own creative ability is as important as the environment they are in

D. working in a coffeehouse is effective for most people

4.Which best describes the writer’s tone in the passage?

A. Negative. B. Objective.

C. Enthusiastic. D. Doubtful.

A volcanic eruption in Iceland has sent ash across northern Europe. Airlines have stopped or changed the flights across the Atlantic Ocean, leaving hundreds of passengers stuck in airports.

Grirmsvom is one of the largest and most active volcanoes in Europe. What makes Grimsvom different is that it lies under a huge glacier（冰川） of ice up to 12 maters thick. The hot volcano heats up the ice above it, which then forms a layer（层）of water between the glacier and the volcano This layer of water puts pressure on the volcano, keeping it stable, As the water flows out from under the glacier, the pressure lifts. The lava（岩浆） from the volcano then comes up to the surface. This is exactly what happened today.

Now, airlines have to make changes to their flights so as not to fly through the clouds of volcanic ash. According to KLM. one of Europe’s biggest airlines, airplanes cannot go under the cloud or over it. Going through the cloud can result in ash getting stuck in the airplane’s engines, causing damage to the plane.

The eruption has also caused problems for animals in Iceland. The volcano left ash and sharp. Glass-like rocks all over the countryside. Farmers are keeping their animals inside to stop them from eating ash- covered grass to the sharp object.

1.What makes Grimsvom different from other volcanoes?

A. It is below ice.

B. It lies under the sea

C. It is the largest volcano

D. It is lava affects the airlines

2.What keeps Grimsvotn still?

A. The slow flow of water

B. The low water temperature

C. The thick glacier

D. The water pressure

3.Which of the following is the result of the volcanic eruption?

A. People stop traveling in Europe

B. Airlines suffer from the loss of planes

C. It becomes dangerous for animals to eat outside

D. Farmers have lost many of their animals

4.This text is most probably taken from_

A. a research paper

B. a newspaper report

C. a class presentation

D. a geography textbook

In 2012, I had just recovered form a serious illness when I received an invitation to a writer's conference in Orlando, Florida. My family persuaded me that a(n) might be just what the doctor ordered, so off I . Arriving in the Sunshine State was rather tiring, but I to catch a taxi to my and settle in. Next morning, I took another to the shopping centre to buy a few souvenirs.

I went to a cafe to have lunch, but all the tables were . Then I heard a friendly voice saying, "You can my table."

I gratefully sat down with the lady and we had a happy lunch together. As the

drew to a close she asked how long I would be in Orlando. I had already told her that I hadn't a car, and hadn't realised how taking taxis would he, After a while she said, "My dear, don't use any more taxis. I'm retired and it would be my pleasure to you wherever you wish." I told her that I couldn't put her to that ,but she brushed aside my protests (反对). She asked me where I was and next morning she was waiting at my apartment at the time to take me to Disney World. She spent some time with me before leaving me to alone. At the end of the day, she to take me back to my accommodation. I her money but she refused to take any.

I'll never forget that wonderful lady who, through her , filled my brief holiday in Florida with wonderful memories.

1.A.holiday B.ceremony C.operation D.experiment

2.A.kept B.went C.dropped D.knocked

3.A.intended B.promised C managed D.deserved

4.A.hospital B.company C.university D.accommodation

5.A.colleague B.passenger C.suitcase D.taxi

6.A.Instead B.First C.Later D.Once

7.A.classified B.occupied C.decorated D.painted

8.A.share B.reserve C.set D.possess

9.A.old B.poor C.innocent D.stubborn

10.A.journey B.meal C.speech D.interview

11.A.donated B.repaired C.hired D.guided

12.A.convenient B.worthwhile C.unfortunate D expensive

13.A.inspire B.entertain C.call D.drive

14.A.business B.argument C.trouble D.challenge

15.A.working B.staying C.moving D shopping

16.A.appointed B.limited C.favourite D.regular

17.A.digest B.explore C.perform D.calculate

18.A.forgot B.refused C.returned D.preferred

19.A.sent B.lent C.offered D.owed

20.A.confidence B.dignity C.curiosity D.kindness

如图，检测10个排球，其中超过标准质量的克数记为正数，不足的克数记为负数，若设一个排球的标准质量为265克．从轻重的角度看，哪个排球与标准重量偏差最大？

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