用9枚钉子组成3×3方阵，用橡皮筋勾在3枚钉子上，组成一个三角形_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题填空题

用9枚钉子组成3×3方阵，用橡皮筋勾在3枚钉子上，组成一个三角形，共可组成______个三角形．

答案

9×8×7÷6-8，

=84-8，

=76；

答：共可组成76个三角形．

故答案为：76．

阅读理解

请阅读下面这篇文章，根据所提供的信息，完成信息卡，把答案写在答题卡指定的位置上。

Life in China
Every day, News on TV, radio and online brings you stories from across China. Have you got a story about life in China? If you do, please put your story here.

Since the winter last year, the haze(雾霾) has happened a lot of times. It has done great harm(伤害) to our daily life. More and more people have to go to see the doctor because the serious disease caused by the haze. Many traffic accidents happened and quite a lot of flights have to be put off just because of the haze weather. On Oct.30, 2013, in 16-car chain collision (连环相撞) on the highway in Tangshan, many people were hurt and some even died. Beijing International Airport canceled or put off nearly 76 flights on Oct.6, 2013 as the result of the weather. (Wu Hai, Shantou)

It’s reported that 293 pedestrians(行人)die of traffic accidents every day in China. I myself ever experienced a very terrible accident.

Early last Thursday morning, I was walking on my way to school as usual. A little boy ran past me. He ran so fast when crossing the street that he didn’t notice a speeding car came round the corner. I was scared and shouted to him to stop, but it was too late. The boy was knocked down by the car. I hurried to the boy, crying for help. The boy was taken to the hospital as soon as the policemen and doctors arrived. Later, I learned the boy died because he lost too much blood.(Li Lan, Guangzhou)

Information card

Main ideas of the two stories	The first story is about air pollution, the second one is about 小题1:____.
Harm that the haze does to our daily life	It may cause 小题2:__and traffic accidents. Many flights have to 小题3:___.
The number that pedestrians die of traffic accident every day	小题4:____
The reason why the little boy died	He小题5:__ and was hit by a speeding car.

单项选择题案例分析题

患者因感染性休克需要使用去甲肾上腺素升高血压，但已知体内也合成去甲肾上腺素。

关于进入血液的去甲肾上腺素，叙述正确的是（）

A.生物半衰期为1h

B.主要在血液内被代谢

C.主要进入肺

D.被组织摄取后经儿茶酚胺氧位甲基转移酶（COMT）和单胺氧化酶代谢

E.最终代谢产物是高香草酸