最大控顶距与最小控顶距之差是什么？

已知{a_n}是递增等比数列，a₂=2，a₄﹣a₃=4，则此数列的公比q=（    ）

弥散性血管内凝血继发性纤溶期的特点是（）。

A.凝血时间缩短

B.血小板计数明显下降

C.纤溶酶原减少

D.鱼精蛋白副凝固试验（3P试验）阳性

E.纤维蛋白原增加

来自下肢静脉的血栓，最可能栓塞的部位是（）

A.支气管静脉

B.支气管动脉

C.肺静脉

D.肺动脉

E.下腔静脉

1998年8月，自称奥地利人的彼德向明光家具店订做一套高级组合家具。该店按照彼德的要求完成全套家具的制作后要求彼德付款提货。彼德拒绝付款，称奥地利法律规定的成年年龄为24岁，自己只有22岁，所以没有民事行为能力，订做家具的合同无效。明光家具店诉诸法院。经查，彼德为无国籍人，曾在英国、奥地利、匈牙利住过，其中在奥地利居住的时间最久，但彼德并未在任何国家定居，也没有住所。1995年底彼德来到中国，此后一直在中国居住。下列表述哪种是正确的( )

A．应当按照彼德的主张，适用奥地利法律确认其无民事行为能力，订做家具的合同无效

B．认定彼德有无民事行为能力可以适用英国、奥地利和匈牙利的法律，由法院选择

C．认定彼德有无民事行为能力可以适用英国、奥地利、匈牙利或者中国的法律，由法院选择

D．应当依据中国法律认定彼德有民事行为能力，其订做家具的合同有效

Many will know that the word "muscle" comes from the Latin for "mouse" (rippling under the skin, so to speak ). But what about "chagrin", derived from the Turkish for roughened leather, or scaly sharkskin. Or "lens" which comes from the Latin "lentil" or "window" meaning "eye of wind" in old Norse Looked at closely, the language comes apart in images, like those strange paintings by Giuseppe Arcimboldo where heads are made of fruit and vegetables.

Not that Henry Hitchings’s book is about verbal surrealism. That is an extra pleasure in a book which is really about the way the English language has roamed the world helping itself liberally to words, absorbing them, forgetting where they came from, and moving on with an ever-growing load of exotics, crossbreeds and subtly shaded near-synonyms. It is also about migrations within the language’s own borders, about upward and downward mobility, about words losing their roots, turning up in new surroundings, or lying in wait, like "duvet" which was mentioned by Samuel Johnson, for their moment.

All this is another way of writing history. The Arab etymologies of " saffron ", "crimson" and "sugar" speak of England’s medieval trade with the Arab world. We have "cheque" and "tariff" from this source too, plus "arithmetic" and "algorithm"-just as we have "etch" and "sketch" from the Dutch, musical terms from the Italians and philosophical ones from the Germans. French nuance and finesse are everywhere. At every stage, the book is about people and ideas on the move, about invasion, refugees, immigrants, traders, colonists and explorers.

This is a huge subject and one that is almost bound to provoke question-marks and explosions in the margins-soon forgotten in the book’s sheer sweep and scale. A balance between straight history and word history is sometimes difficult to strike, though. There is a feeling, occasionally, of being bundled too fast through complex linguistic developments and usages, or of being given interesting slices of history for the sake, after all, of not much more than a "gong" or a "moccasin". But it is churlish to carp. The author’s zest and grasp are wonderful. He makes you want to check out everything-" carp" and "zest" included. Whatever is hybrid, fluid and unpoliced about English delights him.

English has never had its Acad mie Francaise, but over the centuries it has not lacked furious defenders against foreign "corruption". There have been rearguard actions to preserve its "manly" pre-Norman origins, even to reconstruct it along Anglo-Saxon lines: "wheel- saddle" for bicycle, "painlore" for pathology. But the omnivorous beast is rampant still. More people speak it as their second language than as their first. Forget the language of Shakespeare. It’s "Globish" now, the language of aspiration. No one owns it, a cause for despair to some. Mr. Hitchings admits to wincing occasionally, but almost on principle he is more cheerful than not.

What is the trend in the English language that this book emphasizes ？（）

A.The English language is becoming assimilated with other languages

B.Differences between languages are more and more obvious

C.The English language is always absorbing words from other languages and turning them into its own

D.The English language is gradually losing its linguistic vitality