The form of the former formula is formally formulated. 前一个分子式的形式得到正式表述. 查看更多

 

题目列表(包括答案和解析)

阅读下面短文并回答问题,然后将答案写到答题卡相应的位置上(请注意问题后的词数要求)。

[1]It is believed that in such a competitive age, art education is close to an unnecessary part in schools today. However, most of the advantages that a student would gain out of a basic education in art are almost unbelievable.

[2]There has been years of research involved in the importance of art education and what art education goals are. The studies prove that what students gain out of an art education is almost unbeatable, where any other course is concerned.

[3]Motivation, inspiration and concentration are some of the most prominently recorded benefits that a young student can get from taking education. For a young person’s personal growth and development an education in art is something that is considered to be very important as changing the way one looks at the world.

[4]A child whose parents are rich will naturally and very often be exposed to art, whether it is in the form of art pieces hanging at home or visits to fashionable art museums etc. This has again been seen over the years by researchers. At the same time, it has been noticed that exposure to art is something that is very distant for children who belong to families with little money and they end up spending their childhood without forming any connection with art.

[5]Art education goals in school therefore should be that ________ the wonders of art should be given to all students, whatever age group and whatever their family backgrounds are, because one never knows where talent might be hidden.

[6]However, art education goals have been slipping away from our education system for more twenty years now as people have begun to pay less importance to the requirement of art in their children’s lives. The reasons for this could be stressful budgets as well as stuffing of curriculum in classrooms s part of State mandates. Whatever these unfortunate reasons are, people have to once again realize art education goals and how they can actually be helping each student.

1.What is the best title for the text? (no more than 8 words)

_________________________________________________________________________

2. Point out the benefits a young student can get from taking education from paragraph 3. (no more than 5 words)

____________________________________________________________________________

3.Fill in the blank in paragraph 5 with proper words. (no more than 4 words)

_______________________________________________________________________________

4.Why does the art education goals slip away from our education system? (no more than 8 words)

_______________________________________________________________________________

5.What does the word “This” (Line 2, Paragraph 4) probably refer to? (no more than 9 words)

_______________________________________________________________________________

 

查看答案和解析>>

   Do you love holidays but hate the increase weight that follows? You are not alone.

Holidays are happy days with pleasure and delicious foods. Many people, however, are worried about the weight that comes along with these delicious foods.

With proper planning, though, it is possible to control your weight. The idea is to enjoy the holidays but not to eat too much. You don't have to turn away from the foods that you enjoy. The following suggestions may be of some help to you.

Do not miss meals. Before yon leave home for a feast(宴会),have a small, low-fat snack(小吃). This may help to keep you from getting too excited before delicious foods. Begin with clear soup and fruit or vegetables. A large glass of water before you eat may help you feel full. Use a small plate; a large plate will encourage you to have more than enough.

Better not have high-fat foods. Dishes that look oily or creamy have much fat in them.

Choose lean meat(瘦肉 ).Fill your plate with salad and green vegetables.

If you have a sweet tooth, try mints (薄荷) and fruits. They don’t have fat content as cream and chocolate.

Don’t let exercise take a break during the holidays. A 20-minute walk after a meal can help burn off excess(过多的) calories.

1.Holidays are happy days with pleasure but they may ______

A.bring weight problems                   B.bring you much trouble in your life

C.make you worried about your foods         D.make you hate delicious foods

2.In order to really enjoy your holidays without putting on weight, you'd better__

A.drink much water and have vegetables only   B.not eat the food in high fat

C.not accept invitations to feasts             D.turn away from delicious foods

3.Many people can't help putting on weight after the holidays because they _______ .

A.can't control themselves                  B.go to too many feasts

C.enjoy delicious foods                    D.can't help turning away from the foods

4.Excess calories can be found in your body in the form of___ .

A.energy           B.fat               C.food             D.something invisible (看不见)

 

查看答案和解析>>

Electric cars are dirty.In factnot only are they dirtythey might even be more dirty than their gasoline?powered cousins.

People in California love to talk about “zero?emissions vehicles”but_people_in_California_seem_to_be_clueless_about_where_electricity_comes_from.Power plants mostly use fire to make it.Aside from the new folks who have their roofs covered with solar cellswe get our electricity from generators.Generators are fueled by something—usually coaloilbut also by heat generated in nuclear power plants.There are a few wind farms and geothermal(地热的) plants as wellbut by far we get electricity mainly by burning something.

In other wordsthose “zero?emissions” cars are likely coal?burning cars.It’s just because the coal is burned somewhere else that it looks clean.It is not.It’s as if the California Greens are covering their eyes—“If I can’t see itit’s not happening.” Gasoline is an incredibly efficient way to power a vehiclea gallon of gas has a lot of energy in it.But when you take that gas(or another fuel) and first use it to make electricityyou waste a nice part of that energymostly in the form of wasted heat—at the generatorthrough the transmission(传送) linesetc.

A gallon of gas may propel your car 25 miles.But the electricity you get from that gallon of gas won’t get you nearly as far—so electric cars burn more fuel than gas?powered ones.If our electricity came mostly from nukesor geothermalor hydroor solaror windthen an electric car truly would be clean.But for politicaltechnicaland economic reasonswe don’t use much of those energy sources.

In additionelectric cars’ batteries which are poisonous for a long time will eventually end up in a landfill.And finallywhen cars are the pollutersthe pollution is spread across all the roads.When it’s a power plantthoughall the junk is in one place.Nature is very good at cleaning up when things are too concentratedbut it takes a lot longer when all the garbage is in one spot.

1. What does the underlined part mean in Paragraph 2?

APeople see the California Greens everywhere.

BPeople in California love to talk about zero?emissions vehicles.

CPeople in California love to have their roofs covered with solar cells.

DPeople in California have no idea that so far electricity mainly comes from burning coaloiletc.

2. What is the main idea of the text?

AElectric cars are not clean at all.

BElectric cars are better than gasoline?powered ones.

CPeople cast doubts on electric cars’ batteries.

DGasoline is an efficient way to power a vehicle.

3. The electricity we get from a gallon of gas may make our car run ________.

Anot less than 25 miles

Bas far as 50 miles

Cas far as 25 miles

Dnot more than 25 miles

4. It can be inferred from the text that ________.

Abeing green is good and should be encouraged in communication

Belectric cars are not clean in that we get electricity mainly by burning something

Czero?emissions vehicles should be chosen to protect our environment

Delectric cars are now the dominant vehicle compared with gasoline?powered cousins

 

查看答案和解析>>

In the 1950s, a family that owned a farm near Beulah, Michigan kept a bull chained to an elm (榆树). The bull paced around the tree, dragging the heavy iron chain, which led to a groove (槽) in the bark . The groove deepened over the years. Though for whatever reason, it did not kill the tree.

   After some years, the family took their bull away. They cut the chain, leaving the loop around the tree and one link hanging down.

   Then one year, agricultural disaster struck Michigan in the form of Dutch Elm Disease. All of the elms lining the road leading to the farm became infected and died. Everyone thought that the old elm would be the next.

The farm owners considered doing the safe thing: pulling it out and cutting it up into firewood before it died. But they simply could not bring themselves to do it. It was as if the old tree had become a family friend. So they decided to let nature take its course.

   Amazingly, the tree did not die. Nobody could understand why it was the only elm still standing in the county!

Plant experts from Michigan State University came out to observe the tree. They observed the scar left by the iron chain, now almost completely covered by bark. The experts decided that it was the chain that saved the elm’s life. They reasoned that the tree must have absorbed so much iron from the chain that it became immune to the virus.

 It’s said that what doesn’t kill you will make you stronger. Or, as Earnest Hemingway put it, "Life breaks us all, but afterwards, many of us are strongest at the broken places."

1.What did the family do with the elm when the agricultural disaster hit Michigan one year?

A. They invited plant experts to observe it.

B. They pulled it out and chopped it up into firewood.

C. They prevented it from being infected by the disease.

D. They did nothing and just let it be.

2.Which of the following statements is TRUE?

A. A groove formed because of natural forces.

B. The family decided to keep the tree because they had become attached to it.

C. All of the elms in Beulah, Michigan died of the disease.

D. The plant experts advised the family to chop it down.

3.What actually saved the elm?

A. The bull.   B. The groove.    C. The iron chain.  D. The experts.

4.What would be the best title for the passage?

A. Let nature take its course

B. Strengthened by our wounds

C. Constant dripping wears away a stone

D. Bend, but don’t break

 

查看答案和解析>>

 

         Learners report two main difficulties in reading, which may be linked. There are too many unknown words and as a result reading is simply not a pleasure. For some students, even reading in their own language is a chore.

  Having a wide vocabulary is essential to making sense of written language. Of course, this is a circular argument, because the more you read the more vocabulary you learn and the more words you know the more easily you can read. Don’t make the mistake of reading with your dictionary beside you, looking up every single new or doubtful word. This is laborious and prevents you from practicing the skill of prediction.

  Sometimes in reading you find a word you know but the sense doesn’t seem to fit in. This is not surprising because words have so many meanings and degrees of meaning. What is more, part of their meaning is shaped by the words around them. Keep looking at the surrounding words and asking yourself “what sort of meaning would make sense here?”

  The more that people study the reading process, the better they can pass on to language learners a range of advice to choose from. People have learned to read in all kinds of ways. Here is some information that could help you plan to be a better reader in the foreign language you are studying.

  1)Work out the general meaning first

  When people read in a new language they often feel they must take a detailed approach, focusing on every word, particularly those they don’t know. They read as if they were using a microscope, looking carefully at each of the small pieces(the individual words), but not necessarily seeing the whole picture at first. This is called the “bottom-up” approach. Other readers try to look first at the big picture(the “top-down” approach), attending to individual bricks only as necessary, a process that involves some intelligent guesswork. Generally this second approach is recommended by successful learners.

  2)Interactive reading

  Another way of thinking about reading is to describe it as an interactive process, where the text brings something to you and you bring something to the text. Readers bring together all their knowledge of the world with what they see on the page in front of them. That is why, when reading in our own language, we don’t need to read every word. We add meaning which is not actually stated.

  3)From supported reading to independent reading

  Language learners start by needing considerable support as they read. Textbooks supply this support in the form of introductions that summaries the contents, glossaries, pictures, explanations of new grammar points. In your reading you need to move gradually from this support to reading more the text itself.

1. According to the author, ________.

A. looking up the dictionary is of great help for the understanding

B. reading more promotes the gaining of vocabulary

         C. the more you read, the less useful the dictionary will be

         D. the amount of vocabulary is the key to reading

2. Successful learners recommend ________.

A. trying to look first at the big picture   B. looking carefully at each of the small pieces

C. focusing on every word                 D. “bottom-up” approach

3. The word “chore” in the first paragraph maybe means ________.

A. an important aspect             B. a difficult and tiring thing

C. an easy question          D. something special

4. You come across a new or doubtful word when you are reading, you can ________.

A. just miss it and let it be                 B. keep looking at the surrounding words

C. look it up in the dictionary each time  D. make sense of it with the help of dictionary

 

查看答案和解析>>


同步练习册答案