单选题______ the umbrella with you in case it rains.

单选题It was a chilly November evening in New York City, and my daughter and I were walking up Broadway. Nora noticed a guy sitting inside a cardboard box next to a newsstand. She pulled at my coat sleeve and said, "That man"s cold, Daddy. Can we take him home?" I don"t remember my reply, but I do remember a sudden heavy feeling inside me. I had always been delighted at how much my daughter noticed in her world, whether it was birds in flight or children playing. But now she was noticing suffering and poverty. She wasn"t even four. A few days later, I saw an article in the newspaper about volunteers who delivered meals to elderly people. The volunteers went to a nearby school on a Sunday morning, picked up a food package, and delivered it to an elderly person. I signed us up. Nora was excited about it. She could understand the importance of food, so she could easily see how valuable our job was. When Sunday came, we picked up the package and phoned the elderly person we"d been assigned. She invited us right over. The building was depressing. When the door opened, facing us was a silver-haired woman in an old dress. She took the package and asked if we would like to come in. Nora ran inside. I reluctantly followed. Our hostess showed us some photos of her family. Nora played and laughed. I accepted a second cup of tea. When it came time to say good-bye, we three stood in the doorway and hugged. I walked home in tears. Where else but as volunteers do you have the opportunity to do something enjoyable that"s good for yourself as well as for others? Indeed, the poverty my daughter and I helped lessen that Sunday afternoon was not the woman"s alone—it was in our lives, too. Now Nora and I regularly serve meals to needy people and collect clothes for the homeless. Yet, as I"ve watched her grow over these past four years, I still wonder—which of us has benefited more?

单选题(For) married mothers, the time (spend) on child care (increased) to (an average) of 12.9 hours a week in 2009.

单选题The train ______ of the station fight on time.

单选题Increasingly, over the past ten years, people—especially young people—have become aware of the need to change their eating habits, because much of the food they eat, particularly processed food, is not good for the health. Consequently, there has been a growing interest in natural foods. Foods which do not contain chemical additives (添加剂) and which have not been affected by chemical fertilizers, widely used in farming today. Natural foods, for example, are vegetables, fruit and grain which have been grown in soil that is rich in organic (有机的) matter. In simple terms, this means that the soil has been nourished by unused vegetable matter, which provides it with essential vitamins and minerals. This in itself is a natural process compared with the use of chemicals and fertilizers, the main purpose of which is to increase the amount—but not the quality—of foods grown in commercial fanning areas. Natural foods also include animals which have been allowed to feed and move freely in healthy pastures (牧场). Compare this with what happens in the mass production of poultry: there are farms, for example, where thousands of chickens live crowded together in one building and are fed on food which is little better than rubbish. Chickens kept in this way are not only tasteless as food, they also lay eggs which lack important vitamins. There are other aspects of healthy eating which are now receiving increasing attention from experts on diet. Take, for example, the question of sugar. This is actually a non-essential food! Although a natural alternative, such as honey, can be used to sweeten food if it is necessary, we can in fact do without it. It is not that sugar is harmful in itself. But it does seem to be addictive: the quantity we use has grown steadily over the last two centuries and in Britain today each person consumes an average of 200 pounds a year! Yet all it does is to provide us with energy, in the form of calories. There are no vitamins in it, no minerals and no fiber. It is significant that nowadays fiber is considered to be an important part of a healthy diet. In white bread, for example, the fiber has been removed. But it is present in unrefined flour and of course in vegetables. It is interesting to note that in countries where the national diet contains large quantities of unrefined flour and vegetables, certain diseases are comparatively rare. Hence the emphasis is placed on the eating of whole meal bread and more vegetables by modern experts on "healthy eating".

单选题It is her beautiful eyes ______ attract most of the fans.

单选题I owed my success to the constant ______ of knowledge.

单选题He said that there was nothing to be ______.

单选题—Jack called to say that he would not accept the job. —I had talked him into taking it up many times. ______ since he still refuses.

单选题Ginger: Hey, how was your vacation? Lily: Too bad. I broke my arm when skiing and had to come back home. Ginger: ______

单选题We (wish) that you (didn't have) such a lot of (work), otherwise you (would have enjoyed) the party.

单选题Linda is a good teacher; she always ______ our memory when we can't remember. A. arouses B. refreshes C. wakes D. stimulates

单选题The top of the world is a wonderland. In winter, the temperature often falls to -30℉ and the sun never rises. The ocean is surrounded by frozen ground. There are few people or trees, but to polar bears, the Arctic(北极) is home. Polar bears have thick fur, big paws and other features that make them well prepared for life in their tough environment. In fact, they need the Arctic sea ice for survival. But climate change is causing larger and larger areas of summer sea ice to melt(融化). Experts say that if warming patterns continue, the Arctic could be free of summer sea ice by 2050. That may cause two-thirds of the word"s 20,000 polar bears to be gone by then too. Polar bears can"t survive for long on land. Seals are their main source of food. The only place where polar bears can hunt seals is on the ice. Although these bears are strong swimmers, they are no match for lightning swift seals in the water. A polar bear has brilliantly clever strategies to overcome this disadvantage. In winter the bear waits motionless beside a seal"s breathing hole, which is a narrow tunnel through the ice. Often many hours pass before the seal comes up for air and the bear kills it with a powerful blow of its paw. In summer, the polar bears that live on land eat very little and wait for the sea ice to return. With the sea ice forming later in the year and melting earlier, polar bears do not have enough opportunity to hunt and eat. Less sea ice makes it harder for the bears to catch the seals. The bears must swim longer distances between ice packs(大片浮水), and they can"t always make it. The ice is also getting thinner. These conditions can cause polar-bear cubs to become separated from their mothers, who provide them with food. Steven Amstrup is the chief scientist of Polar Bear International. The group aims to save the bears and their home. "The more people who see polar bears and understand their difficult situations, the better the chance we"ll alter our warming path in time to save them," he says.

单选题Phone caller: Hello. Could I speak to Helen? Helen: ______

单选题Living in the central American desert has its problems, ______ obtaining water is not the least.

单选题Red Cross is the operation to fly in supplies to the refuges.

单选题If we ______ the bus, we ______ the concert in the theatre now.

单选题He suffered from poor eyesight and could ______ read properly.

单选题The dog frightened the little girl ______ crying.