下列有关食管心房调搏的描述，不正确的是（） A.对常见室上性心动过速发生机制的判断可

十几年来，引黄济青工程累计向青岛市内四区供水超过10亿立方米，完全满足了青岛市的用水需求，确保了青岛市的稳定发展。回答题。

小题1:引黄济青工程最直接的环境作用是 (　　)

A．使青岛市民用到了洁净的水

B．使济南恢复了“泉城”的美誉

C．减缓了青岛城市地面的下沉和海水的倒灌

D．改善了青岛的小气候，增强了城市的“雾岛效应”小题2:引黄济青工程每年从11、12月至次年2月进入引水季节，其原因是(　　)

A．冬季山东降水稀少，青岛缺水最严重

B．冬季黄河水含沙量较低，同时可避开春秋农业用水高峰

C．青岛市冬季工业生产需水量最大

D．冬季黄河流域的降雪对引黄济青工程的水源有一定的补充作用小题3:引黄济青工程的配套水库——棘洪滩水库每年都要投放大量的白鲢、花鲢鱼苗，其主要作用是(　　)

A．控制水中藻类过量繁殖，净化水质

B．进行淡水养殖，增加经济收入

C．为吸引鸟类栖息而投放的饵料

D．发展生态旅游，供游客垂钓

阅读理解。

     People all over the world today are beginning to hear and learn more and more about the

problem of pollution. Pollution is caused either by man's release of completely new and often

artificial substances into the environment, or by releasing greatly increased amounts of a natural

substance , such as oil tankers into the sea.

     The whole industrial process which makes many of the goods and machines we need and

use in our daily lives, is bound to create a number of waste products which upset the

environmental balance, or the ecological balance as it is also known. Many of these waste

products can be prevented or disposed of sensibly, but clearly while more and more new

and complex goods are produce there will be new, dangerous wastes to be disposed of, for

example, the waste products from nuclear power stations. Many people, therefore, see

pollution as only part of a larger and more complex problem, that is, the whole process of

industrial production and consumption of goods. Others again see the problem mainly in

connection with agriculture, where new methods are helping farmers grow more and more

on their land to feed our ever-increasing populations. However, the land itself is gradually

becoming worn out as it is being used in some cases, too heavily, and artificial fertilizer cannot

restore the balance.

     Whatever its underlying reasons, there is no doubt that much of the pollution caused could

be controlled if only companies, individuals and governments would make more efforts. In the

home there is an obvious need to control litter and waste. Food comes wrapped up three or

four times in packages that all have to be disposed of; drinks are increasingly sold in bottles

or tins which cannot be reused. This not only causes a litter problem, but also is a great waste

of resources, in term of glass, metals and paper. Advertising has helped this process by

persuading many of us not only to buy things we neither want nor need, but also to throw away

much of what we do buy. Pollution and waste combine to be a problem everyone can help to

solve by cutting out unnecessary buying ,excess consumption and careless disposal of the

products we use in our daily lives.

1. The underlined phrase "disposed of "in the second paragraph means_______.

A. dealt with

B. exposed

C. disapproved of

D. collected

2. In the writer's view ,the more new goods, _______.

A. the less pollution

B. the harder pollution can be prevented

C. the more pollution there will be

D. the more easily pollution can be controlled

3. What can we learn from the last paragraph?

A. We can do much to reduce pollution.

B. The government is trying hard to stop pollution.

C. Individuals know how to get rid of the habit of littering everywhere.

D. We can't stop buying unnecessary things.

4. People can help solve the problem of pollution by _______.

A. urging their governments to control litter and waste

B. making anti-pollution advertisements

C. cutting down the use of oil and other oil products

D. reducing unnecessary buying, over-consumption and careless disposal of wastes

下列是光合作用的几个步骤，它们发生反应的先后次序是（）

①CO₂固定

②释放O₂

③叶绿素吸收光能

④H₂O光解

⑤C₃化合物被[H]还原

A.②③④①⑤

B.③④②①⑤

C.④②③⑤①

D.④③②⑤①

KDON10000/10000Nm³/h中D表示（）

A.高压

B.低压

C.中压

影响压滤机工作效果的四个素入料浓度、入料粒度、压滤时间、入料压力。