客户在柜台签约银证三方存管业务，一张华夏卡或一个机构结算账户对应（）证券公司的（）证

设f（x）是定义在[0，1]上的函数，若存在x^*∈（0，1），使得f（x）在[0，x^*]上单调递增，在[x^*，1]上单调递减，则称f（x）为[0，1]上的单峰函数，x^*为峰点，包含峰点的区间为含峰区间，对任意的[0，1]上的单峰函数f（x），下面研究缩短其含峰区间长度的方法．

（1）证明：对任意的x₁，x₂∈（0，1），x₁＜x₂，若f（x₁）≥f（x₂），则（0，x₂）为含峰区间；

若f（x₁）≤f（x₂），则（x₁，1）为含峰区间；

（2）对给定的r（0＜r＜0.5），证明：存在x₁，x₂∈（0，1），满足x₂-x₁≥2r，使得由（l）所

确定的含峰区间的长度不大于0.5+r．

Recently there was a major discovery in the scientific research — the mapping of all DNA in a human gene(基因) is complete. Couple of years ago, this seems an impossible task for scientist to accomplish. All this progress in science leads us to believe that the day, when the human being will be cloned, is not far away. Human cloning has always been a topic of argument, in terms of morality(道德) or religion.

Taking a look at why cloning might be beneficial, among many cases, it is arguable that parents who are known to be at risk of passing a genetic limitation to a child could make use of cloning. If the clone was free of genetic limitations, then the other clone would be as well. The latter could be inserted in the woman and allowed to ripen to term. Moreover, cloning would enable women, who can’t get pregnant, to have children of their own.

Cloning humans would also mean that organs could be cloned, so it would be a source of perfect transfer organs. This surely would be greatly beneficial to millions of unfortunate people around the world that are expected to lose their lives due to failure of single (or more) organ(s). It is also arguable that a ban on cloning may be unlawful and would rob people of the right to reproduce and limit the freedom of scientists.

Arguments against cloning are also on a perfectly practical side. Primarily, I believe that cloning would step in the normal “cycle” of life. There would be a large number of same genes, which reduce the chances of improvement, and, in turn, development — the fundamental reason how living things naturally adapt to the ever-changing environment. Life processes failing to do so might result in untimely disappearance. Furthermore, cloning would make the uniqueness that each one of us possesses disappear, thus leading to creation of genetically engineered groups of people for specific purposes, and chances are that those individuals would be regarded as “objects” rather than people in the society.

Scientists haven’t 100% guaranteed that the first cloned humans will be normal. Thus, this could result in introduction of additional limitations in the human “gene-pool”.

Regarding such arguable topics in “black or white” approach seems very innocent to me personally. We should rather try to look at all “shades” of it. I believe that cloning is only legal if its purpose is for cloning organs; not humans. Then we could regard this as for “saving life” instead of “creating life”. I believe cloning humans is morally and socially unacceptable.

小题1:   Which of the following is true according to the passage？

A．Genetic limitation will be beneficial for some women

B．A large number of genes will prevent us from developing

C．Prohibition(禁止) of cloning might limit the freedom of scientists

D．First cloned humans might be normal according to scientists小题2:What’s the author’s opinion on cloning?

A．Cloning should be entirely banned

B．Cloning should be used in creating life

C．Cloning will take away the right to reproduce

D．Cloning is acceptable if it is used for cloning organs小题3:Which of the following shows the structure of the passage

正规瞭望通常认为，除视觉、听觉瞭望外，还包括（）。①对船舶现有设备和仪器的有效使用；②从岸台得到的有关船舶动态的信息；③经常检查本船的号灯和号型是否正常显示。

A.①②

B.①③

C.②③

D.①②③

心源性水肿的特点是

A．从面部开始
B．从眼睑开始
C．从脚口踝开始
D．从腰部开始
E．从胸部开始

在修改列表框内容时，RemoveItem方法的作用是【 】。