最早计算出圆周率的近似值的数学家是( )。A．祖冲之 B．张衡 C．欧拉 D．笛卡

色盲的针灸治则为()

A．针灸并用

B．以针为主

C．以灸为主

D．只针不灸

E．只灸不针

试比较麻黄与桂枝功效的异同点。

房屋建筑工程损仿检测的程序为( )。

A．损伤检测范围的确定—损伤情况的初步调查—损伤情况的详细调查—损伤程度分析
B．损伤情况的初步调查—损伤情况的详细调查—损伤检测范围的确定—损伤程度分析
C．损伤检测范围的确定—损伤程度分析—损伤情况的初步调查—损伤情况的详细调查
D．损伤情况的初步调查—损伤检测范围的确定—损伤程度分析—损伤情况的详细调查

下列关于综合布线系统的描述中，错误的是______。

A．双绞线扭绞可以减少电磁干扰
B．管理子系统设置在楼层配线间
C．多介质插座是用来连接铜缆和光纤的
D．对于建筑群子系统直埋布线是最理想的方式

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 Twenty times a day, life prolonging treatment is withheld or withdrawn (4) there is no hope that it can (5) an ultimate cure.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.

18（）

A.patients

B.subjects

C.residents

D.physicians