搜题请搜索小程序“爱下问搜题”
问题 多项选择题

如图，甲、乙两质点在同一直线上的s-t图，以甲的出发点为原点，出发时间为计时起点，则下列说法中正确的（）

A.甲开始运动时，乙在它前面

B.甲、乙是从同地点开始运动的

C.甲在中途停止运动，最后甲还是追上了乙

D.甲追上乙过程中，乙的平均速度大于甲的

答案

参考答案：A, C

解析：甲开始运动时，乙的位移为2m，所以乙在甲前面；甲在中途有一段时间停止运动，最后甲还是追上了乙；甲追上乙时，因为甲的位移大于乙的位移，所以甲的平均速度大于乙。选项AC正确。

判断题

承运人不能按照运输合同拨配车辆时，须征得托运人同意。
查看答案
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 Twenty times a day, life prolonging treatment is withheld or withdrawn (4) there is no hope that it can (5) an ultimate cure.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.

4（）

A.though

B.when

C.that

D.since
查看答案