如何理解杜甫诗歌的“沉郁顿挫”？

患者男，19岁，因“胸闷、气短1个月余，加重1周”入院。查体：气管右偏。左侧胸廓饱满，触觉语颤减低，呼吸动度减弱，叩诊呈浊音，呼吸音消失，右侧正常。胸腔B型超声：左侧大量胸腔积液。胸腔穿刺抽取胸液化验：细胞分类以淋巴细胞为主，总蛋白97g/L，葡萄糖5.34mmol/L，三酰甘油19.66mmol/L，胆固醇2.65mmol/L。

为明确诊断还需要做的检查是（）

A.胸部CT

B.血常规

C.血生化

D.胸液苏丹Ⅲ染色

E.胸液细菌培养

国家赔偿法规定，行政赔偿请求人请求行政赔偿的时效为2年，是从( )之日起算。

A．行政机关作出侵权行为

B．受害人知道侵权行为

C．侵权行为被确认为违法

D．受害人知道有赔偿请求权

保率假设通常也是影响寿险产品定价的因素之一。那么，影响保单退保率的因素有()①保单年度;②投保年龄;③保额;④保费交费频率;⑤性别。

A、①②③

B、①②③④

C、①②③⑤

D、①②③④⑤

证券登记结算公司直接为投资者开立资金结算账户，专用于证券交易成交后的清算交收，具有结算履约担保作用。（ ）

阅读理解。

     No air means death. Although we can't see it, there is air around us. So air is everything and it gives life

to every living thing. Bad air makes people ill. We must have fresh air to keep us in good health.

     In the city there are a great many people and there are too many cars running on the roads. The gas which

the cars spread out is full of poison. Every day we breathe it in again and again. This makes us feel sick.

     Besides so many cars, there are many factories too. From the chimneys of these factories, we get the

smoke usually in black and grey colour. This kind of smoke, when it mixes the air, is dangerous to our health.

It is because smoke contains many poisonous solids and gases. So in order to keep us healthy we have to go

out to the countryside to breathe more fresh air. Or we can go up hills to get more fresh air.

1. Which of the following best explains that no air means death? [ ]

A. Air gives life to every living thing

B. Air can't be seen anywhere around us

C. Bad air makes people sick

D. Fresh air keeps people healthy

2. According to the passage, we know that            . [ ]

A. going up hills is very good to our health

B. smoke from chimneys is more serious than gas from cars

C. We shouldn't go out of doors as much as possible

D. A great many people have to breathe air again and again

3. The best title for the passage is            . [ ]

A. Fresh Air

B. The Use Of Air

C. Breathing Air

D. Bad Air