Most growing plants contain much more water than all other materials combined. C. R. Barnes has suggested that it is as proper to term the plant a water structure as to call a house composed mainly of brick a brick building. Certain it is that all essential processes of plant growth and development occur in water. The mineral elements from the soil that are usable by the plant must be dissolved in the soil solution before they can be taken into the root. They are carried to all parts of the growing plant and are built into essential plant materials while in a dissolved state. The carbon dioxide (CO2) from the air may enter the leaf as a gas but is dissolved in water in the leaf before it is combined with a part of the water to form simple sugars—the base material from which the plant body is mainly built. Actively growing plant parts are generally 75 to 90 percent water. Structural parts of plants, such as woody stems no longer actively growing, may have much less water than growing tissues. The actual amount of water in the plant at one time, however, is only a very small part of what passes through it during its development. The processes photosynthesis, by which carbon dioxide and water are combined—in the presence of chlorophyll (叶绿素) and with energy derived from light—to form sugars, require that carbon dioxide from the air enter the plant. This occurs mainly in the leaves. The leaf surface is not solid but contains great numbers of minute openings, through which the carbon dioxide enters. The same structure that permits the one gas to enter the leaf, however, permits another gas—water vapor—to be lost from it. Since carbon dioxide is present in the air only in trace quantities(3 to 4 parts in 10, 000 parts of air) and water vapor is near saturation in the air spaces within the leaf (at 80 ℉ , saturated air would contain about 186 parts of water vapor in 10, 000 parts of air) , the total amount of water vapor lost is many times the carbon dioxide intake. Actually, because of wind and other factors, the loss of water in proportion to carbon dioxide intake may be even greater than the relative concentrations of the two gases. Also, not all of the carbon dioxide that enters the leaf is synthesized into carbohydrates.

When people talk about the ______ of something, they are referring to the way in which its various parts are put together and arranged. conclusion accommodation evaluation composition

With the third wave of education and future application of AI, ______the shift in how workers see learning throughout their life. coming come came comes

The goal, which they are unlikely to live to see ______, is to culture, prevent or manage all diseases in the next 80 years. (常考) accomplish accomplished accomplishes accomplishing

—Mom, I’ve been studying English since 8 o’clock, ______I go out and play with Tom for a while? —No, I’m afraid not. Besides, It’s raining outside now. wouldn’t can’t May not won’t

—Did you hear the news Dave got fired. —______, last week the boss told me he regretted hiring him. No wonder No sense No kidding No good

Shopping for clothes is not the same experience for a man as it is for a woman. A man goes shopping because he needs something. His purpose is settled and decided in advance. He knows what he wants, and his objective is to find it and buy it: the price is a secondary consideration. All men simply walk into a shop and ask the assistant for what they want. If the shop has it in stock, the salesman promptly produces it, and the business of trying it on proceeds at once. All being well, the deal can be and often is completed in less than five minutes, with hardly any chat and to everyone’s satisfaction. For a man, slight problems may begin when the shop does not have what he wants, or does not have exactly what he wants. In that case the salesman, as the name implies, tries to sell the customer something else—he offers the nearest he can to the article required. No good salesman brings out such a substitute bluntly: he does so with skill and polish, “I know this jacket is not the style you want, sir, but would you like to try it for size. It happens to be the colour you mentioned. “Few men have patience with this treatment, and the usual response is, “ This is the right colour and may be the right size, but I should be wasting my time and yours by trying it on. “ Now how does a woman go about buying clothes? In almost every respect she does so in the opposite way. Her shopping is not often based on need. She has never fully made up her mind what she wants, and she is only“ having a look round“. She is always open to persuasion: indeed she sets great store by what the salesman tells her, even by what companions tell her. She will try on any number of things. Uppermost in her mind is the thought of finding something that everyone thinks suits her. Contrary to a lot of jokes, most women have an excellent sense of value when they buy clothes. They are always on the lookout for the unexpected bargain. Faced with a roomful of dresses, a woman may easily spend an hour going from one rail to another, to and fro, often retracing her steps, before selecting the dresses she wants to try on. It is a laborious process, but apparently an enjoyable one. Most dress shops provide chairs for the waiting husbands.

Failure is what often happens. It is everywhere in our life. Students may fail in exams, scientists may fail in their research work, and players may fail in competitions. Although failure happens to everyone, but different people’s attitudes towards failure are different. Some people don’t think that their failure is an important thing at all. So they pay no attention to it. As a result, they will have the failure later. Some people think they are fools and lose their hearts in everything after they get a failure. Then they waste their time and energy on useless things. At last, they may really be fools as they have thought. Other people are quite different from these two kinds of people mentioned above. Instead of being hopeless and lost, they draw a lesson from every failure and become more experienced. After working hard, they will be successful in the end. So we should draw a lesson from every failure and become more experienced. 用“Is Failure a Bad Thing?”为题写一篇作文，120字左右。要求：1．不能出现上文中的句子。 2．用30词来总结一下这篇短文。 3．说一下你对failure的看法。

Some students of Peking University have ______ setting up a natural reserve on campus and authorities said they were collecting data and thinking about it. answered for called for fallen for stood for

In recent years, the government has accelerated its speed to boost the growth of the digital economy, ______ the Internet plus policy to deepen the combination of the Internet with economic and social sectors. introducing introduced being introduced introduce

Saul Bellow, a Canadian-born American writer, is______another writing intended for another Nobel Prize for literature. (易混) occupied with credited with confined to glued to

There are certain historic occasions______are likely to remind people of what happened in the past and set people reflecting on them. (易错) when that where what

—I’m sorry, Allen. I can’t find your favorite CD. —______, Tom. I’ll go and buy another one. It doesn’t matter Don’t say that Sure You are kidding

—Could I borrow your camera? —______, but please give it back by Saturday. I am sorry Of course Certainly not No, thanks

It’s a rough world out there. Step outside and you could break a leg slipping on your doormat. Light up the stove and you could burn down the house. Luckily, if the doormat or stove failed to warn of coming disaster, a successful lawsuit might compensate you for your troubles. Or so the thinking has gone since the early 1980s, when juries began holding more companies liable for their customers’ misfortunes. Feeling threatened, companies responded by writing ever-longer warning labels, trying to anticipate every possible accident. Today, stepladders carry labels several inches long that warn, among other things, that you might—surprise! —fall off. The label on a child’s Batman cape cautions that the toy “ does not enable user to fly“. While warnings are often appropriate and necessary—the dangers of drug interactions, for example—and many are required by state or federal regulations, it isn’t clear that they actually protect the manufactures and sellers from liability if a customer is injured. About 50 percent of the companies lose when injured customers take them to court. Now the tide appears to be turning. As personal injury claims continue as before, some courts are beginning to side with defendants, especially in cases where a warning label probably wouldn’t have changed anything. In May, Julie Nimmons, president of Schutt Sports in Illinois, successfully fought a lawsuit involving a football player who was paralyzed in a game while wearing a Schutt helmet. “ We’re really sorry he has become paralyzed, but helmets aren’t designed to prevent those kinds of injures, “ says Nimmons. The jury agreed that the nature of the game, not the helmet, was the reason for the athlete’s injury. At the same time, the American Law Institute—a group of judges, lawyers, and academics whose recommendations carry substantial weight—issued new guidelines for tort law stating that companies need not warn customers of obvious dangers or bombard them with a lengthy list of possible ones. “ Important information can get buried in a sea of trivialities, “ says a law professor at Cornell Law School who helped draft the new guidelines. If the moderate end of the legal community has its way, the information on products might actually be provided for the benefit of customers and not as protection against legal liability.

Researchers show that weak readers learns more from difficult texts, so giving them easier ones serves to______ them the very information they need to move on. deny abandon award gain

During the 1960 Rome Olympic Games, Cassius Clay, a young boxer then, won the World Heavyweight Boxing Championship______tough players. (易错) in terms of in reaction to in honor of in face of

Martin Luther King insisted that everybody was born______and he also demanded that black people______as well as the white ones. equally: treated equally: be treated equal: treating equal: be treated

Picture a world where human relationships are challenging, narcissism and self-centeredness are ______, and there is disagreement on the best way for people to live harmoniously together. on the top on the rise on the way on and off

I described that hospital visit as a______because the patients I met were an example to us all, showing extraordinary bravery and persistence. responsibility virtue privilege gesture

My brother turned to bookstores and libraries seeking information about the book mentioned in his professor’s lecture, but found______. no one nothing none anything

A growing plant needs water for all of the following except______.

The essential function of photosynthesis in terms of plant needs is______-

The second paragraph uses facts to develop the essential idea that ______.

According to the passage, which of the following statements is TRUE?

This passage is mainly about______.