问题 单项选择题

某慈善机构募捐,按捐款数额排名前五位的一次是甲、乙、丙、丁、戊,五人共捐款10万元,且数额都不相同。如果甲的捐款刚好是乙、丙之和,乙的捐款刚好是丁、戊之和,那么丙的捐款最多为()元。(捐款金额均是1000元的整数倍)

A.17000 

B.18000 

C.19000 

D.20000

答案

参考答案:A

解析:

解析

根据捐款金额为1000元的整数倍,可知问题实际为将100拆分为5个互不相同的整数,且满足题意。直接以甲、乙、丙、丁、戊代表捐款,可得:甲=乙+丙,乙=丁+戊,甲+乙+丙+丁+戊=100。将前两式代入第三式可得:3乙+2丙=100,于是可知(100-2丙)能够被3整除,将各选项除以1000后代入验证,可知仅A、D符合要求。若为D,即丙=20,则根据前式可得乙=20,与五个数字互不相同矛盾。故答案为A。

考点:数学运算

单项选择题

Abortion. The word alone causes civil conversation to flee the room. This is largely because the pro-choice and pro-life positions are being defined by their extremes, by those who scream accusations instead of arguments.

More reasonable voices and concerns, on both sides of the fence, are given little attention.

For example, pro-life extremists seem unwilling to draw distinctions between some abortions and others, such as those resulting from rape with an underage child. They would make no exception in the recent real-life case of a woman who discovered in her fifth month that her baby would be born dead due to severe disabilities.

On the other hand, pro-choice extremists within feminism insist on holding inconsistent positions. The pregnant woman has an unquestionable fight to abort, they claim. Yet if the biological father has no say whatsoever over the woman’s choice, is it reasonable to impose legal obligations upon him for child support Can absolute legal obligation adhere without some sort of corresponding legal rights

The only hope for progress in the abortion dialogue lies in the great excluded middle, in the voices of average people who see something wrong with a young girl forced to bear the baby of a rapist.

Any commentary on abortion should include a statement of the writer’s position. I represent what seems to be a growing "middle ground" in pro-choice opinion. Legally, I believe in the right of every human being to medically control everything under his or her own skin. Many things people have a legal right to do, however, seem clearly wrong to me. adultery, lying to friends, walking past someone who is bleeding on the street. Some forms of abortion fall into that category. Morally speaking, my doubts have become so extreme that I could not undergo the procedure past the first three months and I would attempt to dissuade friends from doing so.

Fanatics on both sides are using reprehensible and deceitful tactics. An honest dialogue on abortion must start by re-setting the stage, by denouncing the approaches that block communication.

To a pro-life extremist, ().

A. all babies should be carded to term

B. babies resulting form rape should not be born

C. deformed babies can be aborted when detected

D. an underage girl has no right to give birth

判断题