下列科学家中属于863计划倡导者的有 ①邓稼先②王淦昌③王大珩④杨嘉墀⑤陈芳允[

科学家曾做这样一个实验，把表面光滑的铅块放在光滑的金块之上，几年之后，发现金块里含有铅，而铅块里也含有金．这种现象叫做______，它表明______．

感冒病毒不断产生新的变异，对感冒药的抗性不断增强，这种变异是[ ]

A．不利变异

B．有利变异

C．退化

D．不可遗传的

下列程序的输出结果是______。
int x=3；
int y=10；
System.out.println(y%x)；

A．0

B．1

C．2

D．1.0

Passage Three

The question of ethics in the legal profession is one that has plagued the industry since its inception. The common image of an attorney is one who will resort to any unethical trick to twist the laws to fit his purposes. In the more specific industry of criminal law, defense attorneys are often criticized for advocating on behalf of defendants who are "obviously guilty," thus becoming roadblocks on the path to justice. Much to the contrary, however, defense attorneys provide a valuable serve that should earn them praise, not scorn.

While it is true that every lawyer will do everything within his power to interpret the laws in the manner most beneficial to his client, such a characterization is by no means limited to defense attorneys. The prosecutor will do the same thing, employing all his legal knowledge and know-how to establish the guilt of the defendant. In this respect, the vague nature of the law is highlighted, and it becomes a virtual necessity for each side to use every tool at their disposal, on the assumption that the other side will also use every tool at his. The net result emerges as a positive, in which the tricks of the opposing attorneys cancel one another out, leaving only the truth, clearer and devoid of manipulation, presented for the jury’s consideration.

Further, the defense attorney is a vital element of the American judicial system, in that without him the defendant would stand no chance whatsoever. Under the constitution, even the most "obvious guilty" defendants are guaranteed the right to a fair trial, involving someone able and willing to advocate on his behalf. Of course, there are bad apples in the industry who are unethical and care nothing for actual justice, and whose only concerns are their wallets. Generally speaking, however, without defense attorneys, the system would crumble into a mere machine in which defendants are assumed guilty, without a chance to argue or prove otherwise, and many innocent people falsely charged with crimes would be severely punished for transgressions that they didn’t commit. It is a basic fact that the adversarial system of justice in the United States is necessary in order to ensure the fairest and most unbiased presentation and evaluation of the facts possible. Without defense attorneys, that system cannot be carried out, and would result in a loss of the civil liberties that the nation enjoys and treasures. To that end, all of those who make that process a reality, including defense attorneys, deserve our support and admiration, not our suspicion and disdain.

Defense attorneys are vital to the judicial system because without them, it would be impossible to （）.

A．defend the civil rights of all Americans

B．present a truth to the jury that is unbiased and not manipulated

C．advocate on behalf of defendants who are obviously guilty

D．practice the adversarial trial system

用于生产铂金链条的铂金量通常只有（），其余为铜、钯材料。

A.70%

B.75%

C.80%

D.85%