读句子，回答问题。 （1）谈起往事，我深深感谢老师在我那幼小的心田里，播下了文学的种

已知目前无风险资产收益率为5%，市场组合的平均收益率为10%，市场组合平均收益率的标准差为12%。如果甲公司股票收益率与市场组合平均收益率之间的协方差为2.88%，则下列说法不正确的有()。

A、甲公司股票的β系数为2

B、甲公司股票的要求收益率为16%

C、如果该股票为零增长股票，股利固定为2，则股票价值为30

D、如果市场是完全有效的，则甲公司股票的预期收益率为10%

建筑安装工程施工中生产工人的流动施工津贴属于( )。

A．基本工资

B．工资性补贴

C．生产工人辅助工资

D．生产工人劳动保护费

阅读文章，完成下题。

　　①现代社会充满了各种诱惑，这就需要我们在选择中善于舍弃。

　　②“鱼，我所欲也；熊掌，亦我所欲也。二者不可得兼，舍鱼而取熊掌者也。”鱼和熊掌都能得到，当然是最理想的，但这种可能往往是最小的。一般情况下需要在鱼和熊掌中做出选择，即使仅得到鱼，也是一种成功；如果哪一个都不愿舍弃，盲目地追求鱼和熊掌“二者得兼”，最后什么都没有得到，那才是悲剧。

　　③舍弃需要勇气，也需要智慧。

　　④号称“飞禽之王”的欧洲金雕，一窝只生两只幼鸟。有时由于食物不足，两只幼鸟就会“手足相残”，强壮的一只便把弱小的一只挤出巢穴，摔死在崖下。金雕妈妈面对饿死两只幼鸟，还是保全一只幼鸟的现实，别无选择，只能容忍这种残酷的“舍弃”。东北狼被猎人的铁夹夹住后，面对断腿和丧失生命的两种选择，毅然把被夹的那条腿咬断，然后逃生。东北狼凭着这种痛苦而果断的“舍弃”，保存了生命。

　　⑤世界顶尖级科幻小说作家艾萨克·阿西莫夫，曾从事生物化学研究和教学。在研究和教学中，他发现自己有创作科幻小说的天才，于是他对自己作出了冷静客观的分析；我不大可能成为第一流的科学家，但我可能成为第一流的科幻小说家。阿西莫夫毅然告别了大学课堂和实验室，回到家里，专门从事写作。

　　⑥阿西莫夫这一聪明的舍弃，成就了他一生创作480部科幻著作的辉煌业绩，也为他赢得了世界上最负盛名的科幻小说家的荣誉称号。舍弃有时是痛苦的，但如果不能忍受一时的痛苦，就有可能招来终生的痛苦。阿西莫夫当时选择舍弃自己朝夕相处的实验室和讲台，内心无疑是痛苦的，但正是因为他挺住了一时的痛苦，而成就了后来的大业。不做出舍弃，那可能会造成阿西莫夫终生的痛苦和悔恨，也是世界的一个遗憾。阿西莫夫聪明的舍弃；是他本人的幸福，也是读者和世界的幸运。

　　⑦阿西莫夫的事例告诉我们，如果你本来在某些方面没有优势，却一再地坚持，总想将弱势变成优势，就很有可能一事无成。舍弃自己的短项，是为了强化自己的长项，从而让自己更接近成功的目标。

　　⑧在人生征途中，有迂回曲折的坎坷，也有峰回路转的机遇。面对挑战和机遇，需要你慎重思考，该舍弃时就舍弃，不能为了一棵小树而放弃了一片森林。

1．本文作者要表达的主要观点是什么？

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2．文章第②段是从哪个角度证明作者观点的？

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3．简要分析⑤-⑦段的论证过程。

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4．结合自己的经历，说说怎样的舍弃才是有价值的。

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Are you a man or a mouse When people ask this question they want to know (1) you think you are a (2) person or a coward. But you will never really know the answer to this question (3) you are tested in real life. Some people (4) they are brave but when they come face to face with real (5) , they act like cowards. Others think of themselves as cowards, but when they meet danger, they act like (6)

Lenny had always thought of himself as a (7) person. He got worried before examinations. He worried about his job and health. All he wanted in life was to be safe and healthy. (8) , on January 15th, 2002, a plane crashed into the Potomac River in Washington. Lenny went to the river to see what was happening. He saw a woman in the (9) water. Lenny did not feel afraid. He kept very (10) and did a very dangerous thing. He jumped into the Potomac, (11) to the woman, and kept her head (12) the water. Seventy-eight people died that day. Thanks to Lenny, it was not (13) .

When you are in a very (14) situation and feel afraid, the body automatically produces a chemical in the blood. The chemical is called adrenalin. (15) adrenalin in the blood system, you actually feel per and per and are (16) to fight or run away. However, when you are absolutely terrified, the body can produce too much adrenalin. When this (17) , the muscles become very hard and you find you (18) move at all. You are then paralyzed with fear. This is (19) when we are very frightened, we sometimes say we’re "petrified". This word comes from the Greek word "petros", which means "stone". We are (20) frightened that we become stonelike.

15（）

A.With 

B.Without 

C.For 

D.Like

防治尿酸性肾病选用（）

A.VDLP方案

B.DA方案

C.氟达拉滨（fludarabin）

D.信号转导抑制剂STI571

E.口服别嘌醇