—Are we about to have dinner?

—Yes, it           in the dining room.

A．is serving  B．serves       C．served      D．is being served

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：2011-2012學(xué)年上海市理工大學(xué)附屬中學(xué)高二下學(xué)期期末考試英語(yǔ)試卷（帶解析） 題型：填空題

ABCD請(qǐng)按實(shí)際情況填寫(xiě)。其他請(qǐng)參照下表填寫(xiě)。
A, B, C, D, E(AB), F(AC)

A. Control of Respiration
B. Basic tips for preserving cut flowers
C. Role of Respiration
D. Most Important Aspect of Flower Care
E. Need for Clean Water
F. Ways of Stopping Respiration
【小題1】
While everybody enjoys fresh cut flowers around his house, few people know how to keep them for as long as possible. This may be done by keeping in mind a few simple facts. The key to keeping fresh cut flowers for a week or more without floral preservatives(which contain biocides that kill bacteria and fungus) is to keep the water fresh and the stems free of air pockets so they can continue to draw up water.
【小題2】
An important thing to remember about cut flowers is that they are sensitive to temperature. For example, studies have shown that cut carnations(康乃馨) retain their freshness eight times longer when kept at 12℃ than when kept at 26℃. Keeping freshly harvested flowers at the right temperatures is probably the most important aspect of flower care.
【小題3】
Flowers are not intended by nature to live very long. Their biological purpose is simply to attract birds or insects, such as bees, for pollination (授粉). After that, they quickly dry up and die. The process by which flowers consume oxygen and produce carbon dioxide, called respiration (呼吸), generates the energy the flower needs to give the flower its shape and colour. The making of seeds also depends on this energy. While all living things respire, flowers have a high level of respiration. A result of all this respiration is heat, and for flowers the level of heat relative to the mass of the flower is very high. Respiration also brings about the eventual death of the flower. Thus the greater the level of respiration, the sooner the flower dies.
【小題4】
How, then, to control the rate at which flowers die? By controlling respiration. How is respiration controlled? By controlling temperature. We know that respiration produces heat, but the reverse is also true. Thus by maintaining low temperatures, respiration is reduced and the cut flower will age more slowly.
【小題5】
Another vital factor in keeping cut flowers is the quality of the water in which they are placed. Flowers find it difficult to “drink” water that is dirty or otherwise polluted. Even when water looks and smells clean, it almost certainly contains harmful substances that can endanger the flowers. To rid the water of these unwanted substances, household chlorine bleach (含氯漂白劑) can be used in small quantities. It is recommended that 15 drops of chlorine bleach(at 4% solution) be added to each litre of water. The water and solution should also be replaced each day.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2013屆河北省五校聯(lián)盟高三上學(xué)期調(diào)研考試英語(yǔ)試卷（帶解析） 題型：填空題

根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。注意：涂卡時(shí)，如答題卡上沒(méi)有E、F、G選項(xiàng)，請(qǐng)按如下方式填涂：選E涂AB；選F涂BC；選G涂CD。
Before going outside in the morning, many of us check a window thermometer (溫度計(jì)) for the temperature. This helps us decide what to wear.    1    We want our food to be a certain coldness in the refrigerator. We want it a certain hotness in the oven. If we don’t feel well, we use a thermometer to see if we have a fever. We keep our rooms a certain warmth in the winter and a certain coolness in the summer.
Not all the thermometers use the same system to measure temperature. We use a system called the Fahrenheit scale. But most other countries use the Centigrade scale.
Both systems use the freezing and boiling points of water as their guide.     2    
The most common kind of thermometer is made with mercury (水銀) inside a clear glass tube. As mercury ( or any other liquid ) becomes hot, it expands. As it gets colder, it contracts (收縮) . That is why on hot days the mercury line is high in the glass tube.     3       
First, take a clear glass juice bottle that has a cap; fill the bottle with colored water. Tap a hole in the center of the cap using a hammer and thick nail. Put the cap on the jar. Then stick a plastic straw (吸管) through the nail hole.
     4    
Finally, place a white card on the outside of the bottle and behind the straw. Now you can see the water level easily.
     5     
As the temperature goes down, the water will contract, and the level in the straw will come down. Perhaps you will want to keep a record of the water level in the straw each morning for a week.
A.      We use and depend on thermometers to measure the temperature of many other things in our daily lives.
B.      Thermometers measure temperature, by using materials that change in the same way when they are heated or cooled.
C.      Now that you know this rule you can make a thermometer of your own that will work.
D.      The water will rise in the straw. As the temperature of the air goes up, the water will expand and rise even higher.
E.      They label these in different ways. On the Fahrenheit scale water freezes at 32 degrees and boils at 212 degrees. On the Celsius scale water freezes at 0 degrees and boils at 100 degrees.
F.      Take wax ( you may use an old candle if you have one ) and melt some of it right where the straw is stuck into the cap to seal them together. 
G.      People use thermometers which are made by themselves when travelling around the world.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2011-2012學(xué)年廣東佛山市高明區(qū)紀(jì)念中學(xué)高二第一學(xué)段考試英語(yǔ)試卷（帶解析） 題型：填空題

閱讀下列應(yīng)用文及相關(guān)信息，并按照要求匹配信息。請(qǐng)?jiān)诖痤}卡上將對(duì)應(yīng)題號(hào)的相應(yīng)選項(xiàng)字母涂黑。（如果【【答案】】是E請(qǐng)同時(shí)涂黑AB, 如果【【答案】】是F請(qǐng)同時(shí)涂黑CD）,
首先，請(qǐng)閱讀下列調(diào)查問(wèn)卷：
A
Dear Sir/Madame
I think robots can do such dangerous jobs as skyscraper builders, bridge builders and so on .If injured or broken, they can be fixed easily. They can also work in unfavorable conditions such as in the dark, extreme heat, extreme  cold, etc.
B
Dear Sir/Madame
I suppose small man—controlled robots could be used as sea rescuing workers to look for people in the sea. When defusing (拆除引信) bombs, robots could also be used to reduce the risk of losing a human life.
C
Dear Sir/Madame
I suppose robots could be used as dustmen during night time, as they don’t need to sleep and they are safe in polluted environment.
D
Dear Sir/Madame
I suppose robots could be used as chemical researchers. At least they can help us keep away from harmful materials or help to go into small areas which are hard to reach for us. It can be used to examine the inside of a nuclear reactor (核反應(yīng)堆).
E
Dear Sir/Madame
I suppose robots could be astronauts and they could travel very far away,like Pluto.If so,we don’t need to train human beings to be astronauts as it costs quite a lot and it also takes many years to make a professional astronaut.
F
Dear Sir/Madame
I suppose robots could be used as car assembly (裝配) workers ,in parts of the production line. Robots can make the process move faster, get more work done and cost less.
請(qǐng)閱讀下列答卷人的信息，然后匹配答卷人和他們所提供的調(diào)查問(wèn)卷。
46.Jaime is a professor in the field of biochemistry (生物化學(xué)).He is worried about his health situation as he keeps so close to harmful elements year in and year out.
47.Bradley works in the International Security Association.He is sad to think of the fact that there were so many people who couldn’t be saved or found at last in disasters such as in lakes,rivers,seas and so on.
48.Carrie is a young man who has a job in construction company in the city.He is afraid of climbing up laders and carrying the iron bars and other things onto higher places.So he wants to give up the job and find a better one.
49.Josh is a general manager of the National Bluebird Bureau,which is short of excellent astronauts.He has spent lots of his time and money on training them.
50.Alan,who is in his thirties,is a worker in an auto factory.He is thinking of changing his job for shooter which is more interesting and creative.
答卷人在調(diào)查問(wèn)卷中的問(wèn)答：
46.Jaime                             

A．Skyscraper builders
47.Bradley		B．Sea rescuing workers
48.Carrie		C．Dustmen
49.Josh		D．Chemical researchers
50.Alan                             E.Astronauts
F.Car assembly workers

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：單選題

“Where are we now?”_____ few minutes one of the students asked me the same question.


  1. A.
    A
  2. B.
    Each
  3. C.
    Another
  4. D.
    Every

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

第二節(jié)  根據(jù)對(duì)話(huà)內(nèi)容，從對(duì)話(huà)后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。并在答題卡上將該項(xiàng)涂黑。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。（涂卡時(shí)注意：E=AB，F(xiàn)=AC，G=AD）

－ What do you think I ought to see first in London? I’m told one ought to see the British Museum.

Do you think I shall have time for that?

－61  But if I were you, I should leave that for some other day. You could spend a whole day there. It’s much too big to be seen in an hour or so.

－I suppose it is. 62

－That’s not a bad idea. You could spend a couple of hours there comfortably, or even a whole afternoon, watching the wild animals and all those birds. You could have tea there too.

－I’ll do that, then. How do I get there?

－ 63 Where are we now? Oh, there’s that big building. I think your best way from here is to take Baker Street.

－  64

－Oh, no , a quarter of an hour or so , but, if you’re in a hurry, why not take a taxi?

－I think I will.   65 

A. Let me see.

B. Well, you might.

C. What time is it now?

D. Is it much of a walk?

E. Ah, here’s one coming.

F. What about going to the Zoo?

G. Must I stay in London for long?

查看答案和解析>>

同步練習(xí)冊(cè)答案