下列花卉中不属于菊科的是（）。A、南天竹 B、藿香蓟 C、康乃馨 D、三色堇

含吲哚美辛的宫内节育器的优点是（）

A.降低带器妊娠率

B.降低脱落率

C.减少出血及疼痛

D.防止IUD嵌顿

E.延长IUD的使用年限

A家电制造厂是一家有20多年历史的老企业，产品质量好，价格合理，在消费者中树立了良好的口碑，不仅国内市场占有率不断上升，而且顺利进入了东南亚市场。公司未来5年的目标是进入欧美市场。但是，近年来随着环境保护理念的深人人心和政府提倡低碳节能生活方式，消费者越来越青睐耗电量较低的家用电器，许多厂家开发出了节能环保型产品，并逐步占领市场。A企业感到前所未有的压力，尽管销售部门将价格一降再降，并推出多种优惠政策，但因其产品耗电量较高，销售量仍然急剧下降。为此，公司紧急召开董事会会议讨论对策。会上，公司管理层达成一致意见，为了降低产品能耗，需要对现有生产设备进行改造，并提出甲乙两个方案。
甲方案是对现有设备进行更新改造，预计需要投资400万元，预计可使用4年。第1年现金净流量为120万元：第2年、第3年的年现金净流量均为180万元；第4年现金净流量为150万元。
乙方案是重新购置新设备，全部购置成本为1000万元，预计可使用6年。每年现金净流量均为280万元，第6年末设备报废，可得残值收入100万元。由于乙方案所需资金较多，需要向银行借人长期借款600万元，利息率10%，筹资费率3%。该企业所得税率25%。
两个方案均在投资当年一次投入完工，并产生经济效益，资金成本为10%。有关的复利现值系数和年金现值系数见下表：

乙方案长期借款的资金成本为( )。

A．7.5%

B．7.73%

C．10%

D．10.31%

阅读理解。

     "Our aim is to take our art to the world and make people understand what it is to

move," said David Belle, the founder of parkour (跑酷).

     Do you love running? It is a good exercise, yet many people find it boring. But what if making your

morning jog a creative one? Like jumping from walls and over gaps, and ground rolls? Just like the

James Bond in the movie Casino Royale? Bond jumps down from a roof to a windowsill and then runs

several blocks over obstacles on the way. It is just because of Bond's wonderful performances that the

sport has become popular worldwide.

    Yes, that's parkour, an extreme street sport aimed at moving from one point to another as quickly as

possible, getting over all the obstacles in the path using only the abilities of the human body. Parkour is

considered an extreme sport. As its participants dash around a city, they may jump over fences, run up

walls and even move from rooftop to rooftop.

     Parkour can be just as exciting and charming as it sounds, but its participants see parkour much more

than that.

    Overcoming all the obstacles on the course and in life is part of the philosophy behind parkour. This is

the same as life. You must determine your destination, go straight, jump over all the barriers as if in

parkour and never fall back from them in your life, to reach the destination successfully. A parkour lover

said, "I love parkour because its philosophy has become my life, my way to do everything."

Another philosophy we've learnt from parkour is freedom. It can be done by anyone, at any time, anywhere in the world. It is a kind of expression of trust in yourself that you earn energy and confidence.

1. Parkour has become popular throughout the world because of       .

A. its founder, David Belle      

B. the film, Casino Royale

C. its risks and tricks          

D. the varieties of participants

2. The underlined word "obstacles" in Paragraph 2 is closest in meaning to"   ". 

A. streets                  

B. objects

C. barriers                  

D. roofs

3. Which of the following is the philosophy of parkour?

A. Sports and extremes.        

B. Excitement and popularity.

C. Dreams and success.      

D. Determination and freedom.

男性，50岁，乏力、贫血、消瘦3个月，阵发性右下腹痛转为持续性，腹泻、黏液血便，右下腹触及包块，诊断可能性最大的是（）

A.肠结核

B.慢性阑尾炎

C.肠套叠

D.右半结肠癌

E.盲肠炎症

二项分布的图形是一些离散的线段，纵轴代表的是概率密度。