短暂脑缺血发作的临床表现是（） A.血压突然升高，短暂意识不清，抽搐 B.眩晕、呕吐

下列描述中，能较科学描述天气的是（　　）

A．晴空万里

B．常年干旱

C．终年寒冷

D．地中海地区冬雨夏干

阅读下面语段，按要求回答问题：

与陆地上的兔子不同，海兔不是脊椎动物而是生活在热带和亚热带浅海里的一种软体动物——蚝、蚌等海洋贝类的近亲。遗憾的是，今天的海兔已经见不到自己的贝壳了。这是因为它的贝壳长期不用，久而久之已经退化，变成了一片薄薄的透明角质层。海兔的头部长有两对触角，前面一对较短的专管触觉，后面一对细长的只管嗅觉。它既不会跑，也不会跳，只会慢慢地爬行。这种以海带和海藻为主要食物的海兔在沿海有许多种类，而在渤海沿岸仅有一种，那就是斑拟海兔。

下列选项表述与上文不相符的是（）。

A．海兔在东海沿岸出现

B．渤海沿岸的海兔数量比黄海沿岸的少

C．海兔头部长有两对触角，前面一对专管触觉，后面一对专管嗅觉

D．缺少海带和海藻的海域海兔会相对较少

保证金的续存仅支持（），存入时必须输入资金编号。

A.活期保证金

B.定期保证金

C.银票保证金

D.信用证保证金

初始地籍调查成果检查中，专职员检查是作业单位质量管理机构组织对成果质量进行的( )。

A．中期检查
B．后期检查
C．前期检查
D．最终检查

The topic of cloning has been a politically and ethically controversial one since its very beginning. While the moral and philosophical aspects of the issues are entirely up to the interpretation of the individual, the application of cloning technology can be studied objectively. Many in the scientific community advocate the use of cloning for the preservation and support of endangered species of animals, which aside from cloning, have no other practical hope for avoiding extinction.

The goal of the use of cloning to avoid extinction is the reintroduction of new genes into the gene pool of species with few survivors, ensuring the maintenance and expansion of genetic diversity. Likely candidates for this technique are species known to have very few surviving members, such as the African Bongo Antelope, the Sumatran Tiger, and the Chinese Giant Panda. In the case of Giant Panda, some artificial techniques for creating offspring have already been performed, perhaps paving the way for cloning as the next step in the process.

With the estimated population of only about 1000 Giant Pandas left in the world, the urgency of the situation has led to desperate measures. One panda was born through the technique of artificial insemination in the San Diego Zoo in the United States. "Hua Mei" was born in 1999 after her parents, Hsing-Hsing and Ling-Ling, had trouble conceiving naturally.

The plan to increase the Giant Panda population through the use of cloning involves the use of a species related to the Giant Panda, the American Black Bear. Egg cells will be removed from female black bears and then fertilized with Panda cells such as those from Ling-Ling or Hsing-Hsing. The fertilized embryo will then re-implanted into the black bear, where it will grow and mature, until a new panda is delivered from the black bear host.

Critics of cloning technology argue that the emphasis on cloning as a method by which to preserve species will draw funding away from other methods, such as habitat preservation and conservation. Proponents of cloning counter that many countries in which many endangered species exist are too poor to protect and maintain the species’ habitats anyway, making cloning technology the only practical way to ensure that those species survive to future generations. The issue is still hotly debated, as both sides weigh the benefits that could be achieved against the risks and ethical concerns that constantly accompany any argument on the issue. (402 words)

Notes: ethically 道德上。gene pool 基因库。insemination n.受精。fertilize 使受精。embryo 胚胎。proponent支持者，拥护者。weigh A against B权衡A和B的利弊。

The main purpose of the last paragraph is to（）

A. argue in favor of one side on a particularly controversial topic of cloning

B. display both sides’ arguments on another contentious issue in cloning

C. redirect the readers’ attention to the previously raised issue of ethics in cloning

D.provide further relevant information to the evaluation of cloning as a preservation technique