已知某工程双代号网络计划的计划工期等于计算工期，且工作M的开始节点和完成节点均为关键

物质的量均为1mol的下列有机物，在适当条件下与H₂充分加成后，需氢气的物质的量由多到少的顺序正确的是

①苯乙烯②苯   ③甲苯  ④CH₂=CH—CH=CH₂    ⑤乙烯

A．①＞②＞③＞④＞⑤

B．①＞②=③＞④＞⑤

C．①=②=③＞④=⑤

D．①＞③＞②＞④＞⑤

下列变化属于物理变化的是

A．镁条燃烧

B．切割玻璃

C．菜刀生锈

D．向澄清的石灰水中吹气

合同权利转让是指在( )享有合同权利的当事人将其权利转让给第三人享有。

A．不改变合同的权利义务的基础上

B．改变了合同的权利义务基础上

C．债权人债务人迭成一致的基础上

D．让与的债权具有可转让性

It seems incredible to me that Latin is not taught in schools as a matter of course, especially in a country that is forever lamenting its own (undeniable) mediocrity when it comes to speaking foreign languages. As a 13-year-old, I hardly approached my own Latin lessons with anything resembling enthusiasm—I might have been keener if Aeneas went to the shops occasionally—but I am terrifically grateful I had them, all the same.
The benefits are many. Having a basic grounding in Latin makes learning Romance languages a doodle(轻而易举的事): the fact that I speak English plus three others has less to do with any genetic predisposition—I was hopeless at learning Russian—than with an understanding of the root and provenance of Latin-derived words.
It would be impossible to have a smattering of Latin and find oneself stuck in Italy, provided one managed to persuade the speaker to slow down a bit. And the reason I can (arguably) just about string a sentence together in English—which isn’t my first language—has a great deal to do with understanding, through Latin, the way sentences and grammar work.
Latin also has its own pleasing internal logic: you follow the rules and you get the answer. And I really believe that if you know Latin, you half-speak French already. The British used not to be appalling at languages: my theory is that they only became so during the past century, when Latin stopped being widely taught.
Detractors(恶意批评者) might point out that there is little use in learning a dead language. But Latin is not dead: it’s everywhere. It makes the kind of people who never use two short words when six big ones will do intelligible. It demystifies jargon and legalese. It helps with crosswords. It even forces those of us who are pathologically illogical to think logically every once in a while: I remember the pleasure I felt at school, during Latin translation, when I realized I could create order and sense out of apparent chaos.
Really, Latin’s useful applications are manifold. Watching Who Wants To Be A Millionaire a few weeks ago, I noticed that the question which felled the contestant would almost certainly not have stumped him had he had some Latin. Of all the possible answers, only one had a Latin root that echoed the question. From Cicero to Chris Tarrant in a few easy steps, you can’t say more modem or less dusty than that.

The contestant could have won if he/she ______.

A．had not been beaten by some legal words

B．had known something about Latin

C．had not been so eager to be a millionaire

D．had asked the question about Cicero

在“危险增加”的情况下，投保人或被保险人没有按照约定及时通知保险人的（）

A.保险人有权解除保险合同或者要求增加保险费

B.保险人无权解除保险合同且无权要求增加保险

C.保险人只能解除保险合同而无权提高保险费

D.保险人只能提高保险费而无权解除保险合同