海水淹溺和淡水淹溺均会出现下列哪项改变（） A.缺氧 B.血浆渗透压升高 C.血浆渗

关于金融衍生工具的产生与发展论述正确的县()。

A．金融衍生工具产生的最基本原因是避险

B．20世纪80年代以来的金融自由化进一步推动了金融衍生工具的发展

C．金融机构的利润驱动是金融衍生工具产生和迅速发展的又一重要原因

D．新技术革命为金融衍生工具的产生与发展提供了物质基础与手段

句子加工厂（按要求完成下列各句）。

1．傍晚，船把我们送到宝石岛。（改成“被”字句）

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2．一场新中国成立以来罕见的大规模非战争的军事行动在灾区全面展开。（缩句）

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　The Fourth "21th Century Cup" National English Speaking Competition is to be held in Shanghai.

　　Organizers: China Daily and Shanghai Broadcasting Network.

　　Co-ordinater: China University English Speaking Association （CUESA）.

　　Co-sponsors （联办单位）: English Speaking Union （ESU）, Lotus Software （China）Co. Ltd. , Times Publishing Group of Singapore, Hilton Shanghai, Pearson Education, Foreign Language Teaching & Research Press.

　　Date: March 26 （ Friday）, 1999.

　　Place: Hilton Shanghai.

　　Competition Format （形式） : Each student will present a prepared speech on the given topic, followed by a three -minute off - hand speech and a three - minute question and answer period with the judges.

　　Prepared speech period: six minutes.

　　Q & A period: three minutes.

　　Speech topic: People and Nature: In search of harmony （和谐）in a new age ＋ your personal opinion. （Topice for the off hand speech will be given on the day of competition）.

　　Prizes: Besides books and certificates （证书）, the top two winners will be offered scholarships（奖学金） to travel to the annual international English -speaking competition which will be held by the English Speaking Union in London in May, 1999. The third and fourth place winners will be offered a study trip to Singapore, sponsored by the Times Publishing Group. The fifth through 10th place winners will be offered cash prizes. All the competitors will receive certificates from the English Speaking Union and book prizes provided by Pearson Education and Foreign Language Teaching & Research Press. The teachers of the top winners will also receive a one - year membership to the International Association of Teachers of English as a Foreign Language（IATEFL）

　小题1:The main purpose of this passage is ________.

A．to invite you to take part in the competition

B．to tell you some information of the competition

C．to help to improve your spoken English

D．to show you how to win the competition　　小题2:Which of the following is NOT mentioned about the Shanghai English Speaking Competition?________.

A．Where and when it will take place.

B．Its program.

C．What each winner will be offered.

D．The number of its competitors.　　小题3:Suppose you get the sixth place, you'll________ .

A．travel to London for free.

B．become a one - year member of IATEFL

C．get some money , some books and a certificate

D．get a chance to study in Singapore　小题4:An "off- hand speech"is________.

A．a speech not longer than three minutes

B．a speech without preparation

C．a speech with a piece of paper in hand

D．a speech which is well prepared

甲企业向乙银行借款，丙企业为担保人。人民法院受理丙企业破产申请后，乙银行申报了债权。根据企业破产法律制度的规定，下列表述正确的有( )。

A．丙企业可要求甲企业补偿其向乙银行已清偿的担保债额，用于破产分配

B．乙银行在参加破产分配后可就其未受清偿的债权向甲企业要求清偿

C．乙银行以丙企业承担的担保债额为破产债权

D．丙企业的担保义务从申请破产之日起终止

设，其中f（x）为连续函数，a＞0且a≠1，则f（x）等于（）。

A．2a^2x

B．a^2xIn a

C．2xa^2x-1

D．2a^2xln a