题目内容
（请给出正确答案）
[主观题]
Green plants take in carbon dioxide and give off oxygen in a food-making process called ph
otosynthesis．
A.donate
B.check
C.withhold
D.release
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.donate
B.check
C.withhold
D.release
如果结果不匹配，请 联系老师 获取答案
更多“Green plants take in carbon di…”相关的问题
通读下面的短文，回答题。
提示：爱丽丝的妈妈病了，爱丽丝想向老师格林先生请几天假。
Alice : Excuse me， Mr． Green． I" d like to take a few days off．
Green : 51 ？
Alice:My mother is ill． I have to take care of her．
Green:Oh dear! I am sorry to hear that． 52 ？
Alice:No，thank you． My mother has caught a bad cold． She has a high fever and coughs dayand night． The doctor says my mother has to be in hospital for a few days． I would like tobe with her．
Green : I understand． 53 ？
Alice:I hope to be back next Wednesday．
Green : That" s all right． 54
Alice:Thank you， Mr． Green． That" s very kind of you． I will write it immediately．Green : 55
第51题 ________
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When you hear the word “farm”, you may imagine the countryside with cows and crops. But scientists say the farm of the future could be built in tall buildings in some large cities.
It may be difficult to believe, but in fact, the technology for growing crops indoors already exists. Farming in the city is already happening. Some vegetables are already grown in greenhouse. Even the scientists at the South Pole research station can enjoy fresh vegetables they grow in their own greenhouse.
Experts say indoor farming solves many problems. First, traditional farming takes up a lot of land. Growing crops in tall buildings —called vertical farming(垂直农业)—can solve the problem. Also, fruits and vegetables grown indoors would not face serious threats from insects and bad weather.
Though vertical farms don’t exist yet, experts have created a plan for recycling in such farms. The water from indoor fish ponds would be used to water chicken or pigs would be reused as a source of energy.
But experts believe vertical farming is not going to be easy. They say it can be difficult to control climate conditions indoors. Besides, plants differ in their weather and lighting needs. For example, some plants like warm, sunny weather, but other plants prefer cooler temperature.
That’s not to say these difficulties won’t be overcome—but it will take time. Most experts suggest it may take about 5 to 15 years before the first vertical farms could be created.
1. The word “farm” may make you think of the countryside.
A. True B. False C. Not Given
2. It is still a dream for people to grow crops indoors.
A. True B. False C. Not Given
3. Scientists at the South Pole research station live a hard life.
A. True B. False C. Not Given
4. Vertical farming does not need as much land as traditional farming.
A. True B. False C. Not Given
5. Fresh fruits and vegetables are very expensive in cities.
A. True B. False C. Not Given
6. Crops grown indoors would not be badly harmed by insects.
A. True B. False C. Not Given
7. Scientists do not know how to reuse the animal waste in vertical farms.
A. True B. False C. Not Given
8. Some experts say vertical farming could be difficult.
A. True B. False C. Not Given
9. Indoor plants need the same weather and lighting.
A. True B. False C. Not Given
10. The first vertical farms appeared 5 years ago.
A. True B. False C. Not Given
No wooded landscape we see today has been forest for all time. Plants have minimum requirements of temperature and moisture and, in ages past, virtually every part of Earth's surface has at some time been either too dry or too cold for plants to survive. However, as soon as climatic conditions change in favour of plant life, a fascinating sequence of changes occurs, called a primary succession.
First to colonize the barren land are the lowly lichens, surviving on bare rock. Slowly, the acids preduced by these organisms crack the rock surface, plant debris accumulates, and mosses establish a shallow root-hold. Ferns may follow and, with short grasses and shrubs, gradually form. a covering of plant life. Roots probe even deeper into the developing soil and eventually large shrubs give way to the first trees. These grow rapidly, cutting off sunlight from the smaller plants, and soon establish complete domination-closing their ranks and forming a climax community which may endure for thousands of years.
Yet even this community is not everlasting. Fire may destroy it outright and settlers may cut it down to gain land for pasture or cultivation. If the land is then abandoned, a secondary succession will take over, developing nmch faster on the more hospitable soil. Shrubs and trees are among the early invaders, their seeds carried by the wind, by birds and lodged in the coats of mammals.
For as long as it stands and thrives, the forest is a vast machine, storing energy and many elements essential for life.
What does the forest strike mankind as permanent？
A．The trees are in community.
B．The forest is renewed each season.
C．Man's life is short in comparison.
D．It is an essential part our lives.
fessionals reveal their favorite methods.
Comfort with food. When diet expert Judith Wurtman is stressed out, she does what a lot of people do this time of year: she reaches for food .But in her case, it’s a healthy rice cake or two. “My research suggests that carbohydrates (碳水化合物) raise levels of a brain chemical, which has a calming effect on the entire body,” says the MIT research scientist. “So signs of stress — such as anger, tension, and inability to focus — are eased.”
Run from your problems. Dr. Kenneth H. Cooper, who popularized aerobics (有氧运动) through his1968 book by that name, handles his own stress with a daily after-work run. He knows that physical activity reduces anxiety and depression. “Aerobic exercise is the best way to dissipate stress,”says Cooper.
Look to the light side. On his way to the hospital where his father was to have surgery Joel Goodman shared a hotel bus with anxious relatives of several patients. The driver began telling his stressed-out passengers a few jokes. “Then he did some magic tricks that had my mother and me laughing.” Goodman says. “In that five-minute ride he taught us that humor can lessen our stress.”
The surgery was successful, and Goodman was so moved by his experience that he researched laughter’s power. “A good laugh relaxes muscles, reduces blood pressure, restrains stress-related hormones and enhances the immune system (免疫系统),” he says.
Go green. Coffee, loaded with hidden sources of caffeine, stimulates (刺激) the nervous system and can make you feel stressed more easily. That’s why Arizona Doctor Andrew Weil, author of best seller Spontaneous Healing, does not take caffeine. “When I want gentle energy, I drink green tea. It contains a caffeine-like element”, Weil says. It also contains compounds that, some studies suggest, have anti-cancer effects.
16. The following are ways to free you from stress EXCEPT__________.
A. looking at things in a more relaxed way
B. getting a lot of sleep during the day
C. eating some food with carbohydrates
D. doing some aerobic exercise
17. Eating or drinking the following can be helpful in freeing you from stress EXCEPT________.
A. drink green tea B. eat some bread
C. eat some rice cake D. drink a lot of coffee
18. A good laugh is very helpful EXCEPT to__________.
A. reduce blood pressure B. restrain stress-related hormones
C. enhance the immune system D. take a holiday
19. What is the meaning of the word “dissipate” in the part “Rum from your problems”？
A. lessen. B. Depress. C. Disturb. D. Level.
20. Which of the following group of people can have a happier life, according to passage？
A. Those who are continuously eating something.
B. Those who are always engaged in working.
C. Those who use right methods to reduce tension.
D. Those who study medicine or psychology.
Concrete
Another thing to remember in connection with concrete is that you are not allowed very much leeway for errors in either measurements or location. Once you have a solid mass of concrete set in place, it is going to stay there. You have a difficult job ahead of you if you try to remedy a mistake. Make very sure, before you fill the form, that everything is where and how you want it.
There are numerous rules regarding the proper mixing handing, and finishing of concrete, but the essential one concerns the amount of water to use. The less water in the mix, the less the finished job will shrink. The less water used, the harder and more enduring the job after it has set.
The amateur concrete worker is plagued with two desires. One is to use enough Water to have the concrete nice and soft and easy to push around. You have been warned against that. The second is to take off the wooden forms too early, to see what the job looks like. That is really fatal. If the forms are stripped off too soon, while the concrete is still green, two things are likely to happen—you are almost sure to break off corners or edges, and you are likely to cause a major crack or defect in the body of the work. An excellent rule is to wait until you are sure the concrete is properly' hardened, and then wait another day before removing the forms.
The best title for this selection would be:________.
A．Concrete and Its Uses
B．Rules for Working with Concrete
C．Concrete, the Homeowner's Joy
D．Concrete, a Test of Character
完形填空
One afternoon, my son Adam asked me," Are all people the same even if they are different in color？"
I thought for a minute, and then I said, "I'll explain,【16】you can just wait until we make a quick【17】at the grocery store. I have something【18】to show you. "
At the grocery store, we【19】some apples-red,green and yellow ones. Back home. I told Adam,"It's time to【20】your question. "I put one apple of each【21】on the table. Then I looked at Adam, who had a【22】look on his face.
"People are like apples. They come in all【23】colors, shapes and sizes. On the【24】, some of the apples may not【25】look as delicious as the others. "As I was talking, Adam was【26】each one carefully.
Then, I took each of the apples and peeled(削皮) them,【27】them back on the table, but【28】a different place.
"Okay, Adam, tell me which is which. "
He said, "I【29】tell. They all look the same now. " "Take a bite of【30】See if that helps you【31】which one is which. "
He took【32】, and then a huge smile came across his face. "People are【33】like apples! They are all different, but once you【34】the outside, they're pretty much the same on the in- side. "
He totally【35】it. I didn't need to say or do anything else.
(26)
A．although
B．so
C．because
D．if
2 One of the greatest gulfs separating the driving nations is the Atlantic Ocean. More precisely, it is the mental distance between the European and the American motorist, particularly the South American motorist. Compare, for example, an English driver at a set of traffic lights with a Brazilian.
3 Very rarely will an Englishman try to anticipate the green light by moving off prematurely. You will find the occasional sharpie who watches for the amber to come up on the adjacent set of lights. However, he will not go until he receives the lawful signal. Brazilians view the thing quite differently. If, in fact, they see traffic lights at all, they regard them as a kind of roadside decoration.
4 The natives of North America are much more disciplined. They demonstrate this in their addiction to driving in one lane and sticking to it—even if it means settling behind some great truck for many miles.
5 To prevent other drivers from falling into reckless ways, American motorists try always to stay close behind the vehicle in front, which can make it impossible, when all the vehicles are moving at about 55 mph, to make a real lane change. European visitors are constantly falling into this trap. They return to the Old World still flapping their arms in frustration because while driving in the States in their car they kept failing to get off the highway when they wanted to and were swept along to the next city.
6 However, one nation above all others lives scrupulously by its traffic regulations--the Swiss. In Switzerland, if you were simply to anticipate a traffic light, the chances are that the motorist behind you would take your number and report you to the police. What is more, the police would visit you; and you would be convicted.
7 The Swiss take their rules Of the road so seriously that a driver can be ordered to appear in court and charged for speeding on hearsay alone, and very likely found guilty. There are slight regional variations among the French, German and Italian speaking areas,but it is generally safe to assume that any car bearing a CH sticker will be driven with a high degree of discipline.
The fact that the Brazilians regard traffic lights as a kind of roadside decoration suggests that
A．traffic lights are part of street scenery.
B．they simply ignore traffic lights.
C．they want to put them at roadsides.
D．there are very few traffic lights.
Hydroponics ______ the cultivation of plants without soil.
A．does
B．is
C．do
D．are
There () more than 300,000 kinds of plants on the earth.
A.is
B.are existing
C.exists
D.exist
