凸n多边形有f(n)条对角线,则凸(n+1)边形的对角线的条数f(n+1)为[

题型:选择题

问题:

凸n多边形有f(n)条对角线,则凸(n+1)边形的对角线的条数f(n+1)为[ ]

A.f(n)+n+1

B.f(n)+n

C.f(n)+n-1

D.f(n)+n-2

考点:合情推理
题型:选择题

Friday marks the 40th anniversary of one of the biggest, most expensive, most destructive social policy experiments in American history: The war on drugs. On the morning of June 17, 1971, President Richard Nixon, speaking from the Briefing Room of the White House, declared: "America’s public enemy No. 1 in the United States is drug abuse. In order to fight and defeat this enemy, it is necessary to wage a new, all-out offensive. I have asked the Congress to provide the legislative authority and the funds to fuel this kind of an offensive. This will be a worldwide offensive dealing with the problems of sources of supply, as well as Americans who may be stationed abroad, wherever they are in the world. "

So began a war that has waxed and waned, ,sputtered and sprinted, until it became an unmitigated disaster, an abomination of justice and a self-perpetuating, trillion-dollar economy of wasted human capital, ruined lives and decimated communities. Since 1971, more than 40 million arrests have been conducted for drug-related offenses. And no group has been more targeted and suffered more damage than the black community. As the American Civil Liberties Union pointed out last week, "The racial disparities are staggering: despite the fact that whites engage in drug offenses at a higher rate than African-Americans, African-Americans are incarcerated for drug offenses at a rate that is: 10 times greater than that of whites. "

An effort meant to save us from a form of moral decay became its own insidious brand of moral perversion-turning people who should have been patients into prisoners, criminalizing victimless behavior, targeting those whose first offense was entering the world wrapped in the wrong skin. It feeds our overwhelming thirst for punishment.

Last week, the Report of the Global Commission on Drug Policy, a 19-member commission that included Kofi Annan, a former U. N. secretary general, declared that: "The global war on drugs has failed, with devastating consequences for individuals and societies around the world. Fifty years after the initiation of the U.N. Single Convention on Narcotic Drugs, and 40 years after President Nixon launched the U. S. government’s war on drugs, fundamental reforms in national and global drug control policies are urgently needed. "

The White House immediately shot back: no dice. The Obama administration presented a collection of statistics that compared current drug use and demand with the peak of the late 1970s, although a direct correlation between those declines and the drug war are highly debatable. In doing so, it completely sidestepped the human, economic and societal toll of the mass imprisonment of millions of Americans, many for simple possession.

No need to put a human face on 40 years of folly when you can wrap up its inefficacy in a patchwork quilt of self-serving statistics.

It is obvious that the Obama administration()

A. is sympathetic to the wrongly imprisoned victims

B. is less tolerant of drug abuse than the Nixon administration

C. is dissatisfied with Annan’s assessment of the situation

D. has done better than the Nixon administration in the war on drugs

题型:选择题

The clock struck(敲)eight,but I was still on the bed.I could hear it was blowing strongly.“It must be windy outside,” I thought. I came to the small town a week ago. I sold some clothes to a ten and friends.So I tried to meet the manager and ask him to pay for them.I was out of luck(运气不好).He went to London and I had to wait for him here.There was no theatre here but a cinema.The films were all too old.I preferred staying in the small hotel to sitting in the cold cinema. Half an hour later,I felt hungry.I had to get up.It was white everywhere and some children were skiing down the hill.On my way to the small restaurant,I saw a boy fall on to a rock (岩石).I ran to him quickly and carried him to a hospital.Soon his parents came here.Now I knew the boy was just the manager’s son.He thanked me very much and gave me the money after we had a dinner.

小题1:What was the weather like ?

______________________________

小题2:What did the writer come to the town for?

______________________________

小题3:Why did the writer prefer staying in the hotel?

______________________________

小题4:When did the writer get up?

______________________________

小题5:Why did the manager thank the writer?

______________________________  

题型:选择题

女孩,2岁。反复喘息发作4次,对花粉过敏,其父年幼时有哮喘病史

经积极综合治疗,患儿痊愈,此后不久再次出现喘息,至1岁半时已反复喘息4次,查体:肺部哮鸣音。胸部X线片称间质性改变。此时最可能的诊断应为()

A.间质性肺炎

B.毛细支气管炎

C.异物吸入

D.支气管哮喘

E.病毒相关性喘息

题型:选择题

有核红细胞

题型:选择题

马云谈到,未来的竞争是()的竞争。

A.数据

B.信息

C.人才

D.技术

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