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问题 单项选择题

关于腔肠动物主要特征的叙述，不正确的是（）。

A、体制多数为辐射对称，少数为两辐射对称

B、具两胚层，出现了原始的消化循环腔

C、出现了原始的神经组织-神经网

D、有的种类在生活史过程中有世代交替现象，海产种类个体发育需经牟勒氏幼虫期

答案

参考答案：D

多项选择题

社会契约论的代表人物是（）。

A．孟德斯鸠

B．罗尔斯

C．布坎南

D．卢梭
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单项选择题

Euthanasia has been a topic of controversy in Europe since at least 1936. On an average of six times a day, a doctor in Holland practices "active" euthanasia: (1) administering a lethal drug to a (2) ill patient who has asked to be relieved (3) suffering. Twenty times a day, life prolonging treatment is withheld or withdrawn (4) there is no hope that it can (5) an ultimate cure. "Active" euthanasia remains a crime on the Dutch statute books, punishable (6) 12 years in prison. But a series of court cases over the past 15 years has made it clear that a competent physician who (7) it out will not be prosecuted.

Euthanasia, often called "mercy killing", is a crime everywhere in Western Europe. (8) more and more doctors and nurses in Britain, Germany, Holland and elsewhere readily (9) to practicing it, most often in the "passive" form of withholding or withdrawing (10) The long simmering euthanasia issue has lately (11) into a sometimes fierce public debate, (12) both sides claiming the mantle of ultimate righteousness. Those (13) to the practice see themselves (14) sacred principles of respect for life, (15) those in favor raise the banner of humane treatment. After years (16) the defensive, the advocates now seem to be (17) ground. Recent polls in Britain show that 72 percent of British (18) favor euthanasia in some circumstances. An astonishing 76 percent of (19) to a poll taken late last year in France said they would like the law changed to (20) mercy killings. Obviously, pressure groups favoring euthanasia and "assisted suicide" have grown steadily in Europe over the years.

1（）

A.incidentally

B.intentionally

C.intermittently

D.intensely
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