单项选择题
为了保证砌块墙体的整体性，在砌筑时要错缝搭接，具体要求是______。
A．单排小孔搭砌长度不应小于1/4砌块长
B．多排小孔搭砌长度不应小于100m
C．竖向通缝不得超过两皮小砌块
D．搭砌的同时应在水平灰缝内设2
4的钢筋网片
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问答题
Read the following passage carefully and compose a "topic outline" for it.AfricasWhen many people hear the word "Africa", inevitably they picture steaming jungles and gorillas and other wild animals. Hollywood films have shrunk the public image of this immense, varied continent into a small segment of its actual diversity. To have a more accurate picture of the whole continent, however, one should remember that the continent can be roughly divided into three Africas: the northern desert areas, the southeastern grass- lands, and the tropical jungles to the southwest, each with its distinct climate and terrain and with a style of life suited to the environment.The northern regions have the environment and living patterns of the desert. Egypt, Libya, Algeria, and Morocco have hot, dry climates with very little land suited to farming. Green fields cannot be easily seen. Therefore, the population tends to be clustered into cities along rivers or the seacoast or into smaller settlements near oases. For thousands of years, people have lived in this vast region, relying partly on what the land could offer such as crops and animals they could raise and partly on trade with Europe.The southeastern grasslands provide a better environment for animal life and for some kinds of crops. Many wild animals inhabit the plains in this region-elephants, giraffes, rhinoceros, antelopes, zebras, and lions. The people in this area have long been expert cattle raisers and experienced hunters. Tea, coffee, cotton, cashew nuts, and tobacco are some of the main products grown in this region. Fishing also provides some food and income for people along the coast. The population here is less concentrated in cities and towns than in the north, but tends to be denser in areas where adequate rainfall and fertile soil make farming possible.West Africa is the region closest to the Hollywood image of mysterious jungles. As in the other two regions, the way people make a living depends upon their environment. This does not mean that most of the people live in grass huts in the jungle. In fact, such nations as Nigeria have become highly modernized by income from oil, timber, and minerals. Most of the western countries have some farming that provides food and income; sugar cane, col- fee, and tobacco are the important cash crops, while bananas, rice, and corn are raised for food. Fishing in the rivers and along the coast also accounts for food and income, and precious stones, especially diamonds, enhance the economy of countries like Angola and the Ivory Coast.Even a superficial look at the major regions of Africa shows that it is a continent with varied environments. Although most of the continent is tropical in its range of temperature, the climate ranges from deserts to rain forests. Similarly, human lifestyles vary from the simplest rural villages to industrial cities, both new and ancient. Contrary to the myth, how- ever, jungle life makes up only a very small portion of the whole of Africa. -
问答题
Read the following passage carefully and compose a "sentence outline" or "topic outline" for it.Influences of Movies or TV on People"s BehaviorJust imagine that it is Saturday evening. What will you probably do tonight I think lots of people will choose to go to movies or stay at home watching an interesting TV program. TV and movies have played an important role in our daily life.First of all, they widen our sights. There"re numerous TV programs concerning the worldwide affairs. I still remember clearly now when I first saw the African tribes on the screen, I was fascinated by the marvelous jungles, the colorful weapons, the furious animals and the fantastic wild games. Isn"t it marvelous to see the people and places totally different from yours! Maybe you would never know them, appreciate them or want to visit them if you haven"t encountered them on the gigantic screen.Second, they are very entertaining. After a day of hard work, maybe you don"t have the energy to have a long camping trip, especially when you still have lots of things to do tomorrow morning. Why not turn on the TV and choose an interesting show or an exciting game While having some coffee, chatting with your family, you really feel relaxed.Furthermore, as a convenient communicational tool, movies, especially TV programs, help the people in the areas of social work, education, advertisements and so on. There is an interesting program called "Let"s get to know each other tonight", which helps young men and women to choose their lovers on the screen. Many people like to see it. It become so popular that nearly everyone can sing the song in that program.But on the other hand, there are some complaints about them. For example, some children spend hours before the little screen, ignoring their study, outdoor activities and even their family. Parents say that these kids are indifferent to nearly everything and premature somehow.As for me, I like to see movies very much. I think every good film is a creative product of mankind. They are useful, introductive as well as entertaining. And yet it is true we should tell the kids to spend their time wisely, having other hobbies and other outdoor activities. The same is true for adults. Chocolate is very delicious, but if you eat it every day, it will be tasteless and may be disgusting as well as bad to your health. -
问答题
Write a description of the Chinese family.
