MDEA溶液起泡带液的原因是什么，如何判断和处理？

在下面横线上仿写出恰当的句子。

甲句：悲观者说，希望是地平线，就算看得见，也永远走不到。乐观者说，_________，即使摘不到，但也能使人看到曙光就在眼前。

乙句：悲观者说，风是浪的帮凶，_____________。乐观者说，风是帆的伙伴，能把你送到胜利的彼岸。

下列有关染色体与DNA分子间关系的叙述，正确的是（　　）

A．不同生物的染色体不同，但DNA分子相同

B．DNA分子是染色体的主要组成成分

C．染色体和DNA分子都是遗传物质

D．染色体的组成包括DNA分子和基因

阅读理解。

     In Western countries people have been using the installment plan since the first half of the twentieth

century. Today, a large number of families in Great Britain buy furniture, household goods and cars by

installments. In the U. S., the figure is much higher than in Great Britain, and people there spend over 10

percent of their income on the installment plan.

     The price of an article bought on installments is always higher than the price that would be paid by cash.

There is a charge for interest. The buyer pays one quarter or one third of the price as a down payment when

the goods are delivered to him. He then makes regular payments, weekly or monthly, until the full price is paid

up. The legal ownership of the goods remains with the seller until the final payment has been made.

     Installment buying has advantages and disadvantages. It can help couples with small incomes to furnish

their homes and start housekeeping. It increases the demand for goods, and in this way helps business and

employment. There is, however, the danger that when business is bad, installment buying may end suddenly,

making business much worse. This may result in a great increase in unemployment. If the people on the

installment plan lose their jobs, they will probably not be able to make their payments. If great numbers of

people are not able to pay their installment debts there is a possibility that businessmen cannot collect their

debts and will therefore lose money. If businessmen lose money or fail to make a satisfactory profit, it

becomes more likely to have a depression. This is why, in some countries, the government controls the

installment plan by fixing the amount of the down payment and installments to discourage people from

buying more than they can pay for on the installment plan.

1. Which of the following is NOT true about the installment plan?

A. A lot of British families use the installment plan.

B. More than 10 percent American families buy things on installments.

C. Americans depend more on installment than British people do.

D. Americans spend one tenth of their income on installment buying.

2. Goods bought on installments are more expensive than goods bought by cash because _____.

A. the buyer has to pay extra money as interest

B. the delivery of the goods charges extra money

C. the buyer has to pay a down payment

D. the service offered by installment plan charged extra money

3. What will happen to a buyer if he fails to make the full payment for an item bought on installments?

A. He might lose his job.

B. He will stop owning the item he has bought.

C. He will have to sell what he has bought.

D. He will go into debt.

4. The advantage of installment buying might include all the following EXCEPT that _____.

A. purchasing power is strengthened

B. employment might be increased

C. people develop a good habit of saving money

D. young couples are able to furnish their homes

5. In some countries, the governments control the installment plan to _____.

A. increase employment

B. avoid depressions

C. ensure that businesses make good profits

D. ensure that people can pay for what hey buy

下列关于公用危机应急管理沟通机制的阐述中，正确的是（）。

A.如果是严重意外事件，新闻中心应尽可能设立在第一线

B.加强对新闻媒体的管制，统一宣传口径

C.设立新闻发言人，传递政府声音

D.积极征求公众意见，提高政府与公众之间的良性互动

材料一：人们把那些大学毕业后选择留在大城市工作的低收入群体称做“蚁族”。他们和蚂蚁有许多相似的特点：高智、弱小、群居。仅北京一地就有至少10万“蚁族”。人大代表、政协委员多次去北京“蚁族”聚居地唐家岭实地调研，在两会上他们提出了许多有关解决“蚁族”问题的有价值的议案、提案。目前，北京市海淀区政府唐家岭地区整体改造全面启动。这一改造工程旨在建设公租房提供给外地人口和大学毕业生。

材料二：河南省某村是我国农业战线的先进典型。该村党组织多年来始终为当地群众所拥戴。该村党组织的基本经验是自觉实践“三个代表”重要思想，具体地说就是做到“四个始终”：第一，始终把发展农村经济放在首位，现在全村人均收入7000多元；第二，始终关注群众素质的提高，目前全村有大专以上学历的共137人；第三，始终坚持代表最广大人民群众的利益，抓农田改造新村建设，解决就医、上学问题；第四，始终致力于建设一个好党支部，该村党员干部坚持做到带头劳动、带头吃亏、带头讲正气。

针对该村的基本经验，请你就如何搞好党的建设题几条建议。