硫酸能与烯烃、多环芳烃产生化学反应从而将其在石油精制过程中除去（）。

More and more people around the world are joining in dangerous sports. Some people climbed the highest mountains; some traveled into unknown parts of the world; some sailed small boats across the largest sea. Now some people begin to look for new excitement.

Bungee jumping (蹦极) and motorcycle racing (摩托车赛) are quite dangerous sports. Bungee jumping only lasts a few minutes or even seconds. You jump from a high place, 200 meters above the ground, and there is a rubber band (橡胶带子) tied to your legs. When you jump down, the rubber band pulls you up. About 2,000,000 people around the world have tried bungee jumping.

Why do people join in these dangerous sports? Some scientists say that it is because modern life has become safe and it is not interesting. In the past, people lived in danger. They had to go out and look for food, and life was like a fight but was interesting.

Many people think that there is little excitement in life. They live and work in safe places, buy food in shops, and there are doctors and hospitals to look after them if they become ill.

小题1:People like to join in dangerous sports because _______.

A．they have a lot of free time

B．they can go to the hospital if they are hurt

C．they need excitement

D．they don’t need to look for food小题2:_______ is not a dangerous sport.

A．Climbing the highest mountains

B．Riding on the road

C．Traveling into unknown parts of the world

D．Sailing small boats across the largest sea小题3:In bungee jumping, you _______.

A．jump up as high as you can

B．jump down with a rubber band tied to your legs

C．jump down without a rubber band

D．jump to the ground小题4:In the past, people lived in danger because _______.

A．the living condition is poor

B．there was no doctor and hospital

C．there were many dangerous animals

D．all of above小题5:Which is not TRUE?

A．Everyone’s life is interesting.

B．Many people live and work in safe places.

C．Many people buy food in shops.

D．People can go to see the doctors when they become ill.

依次填入下面横线处的句子，与上下文衔接最恰当的一组是[ ]

　　她一人登上青城山顶，忘记了尘世间一切喧嚣和烦忧，此时以鸟为邻，以松为友，以云为伴，以山为家。__________，__________，__________，__________。

①阳光照在山顶的古刹和附近山中的瀑布上

②连平常她喜欢唱的佛教歌曲《云水禅心》都忘记了

③变为一缕缕金丝，一绺绺锦缎

④听着大师的禅语，窗外的一切都视而不见

A．③①④②

B．①②③④

C．①③④②

D．①③②④

Tourette综合征（）

A.累及部位多，症状出现的频繁，对患儿情绪、心理影响较大

B.症状持续时间较长，但对患者社会功能影响相对较小

C.预后良好，大多数患儿症状自行好转

D.大多数患者症状持续终生

E.病情严重，部分患儿会过早夭折

基本指标法中总收入定义为：净利息收入加上净非利息收入，包括银行账户上出售各种证券实现的盈利。（）

女，18岁，汽油火焰烧伤双下肢（包括臀部），创面渗出明显，创基潮红，触痛明显，皮肤温度高，则该病人烧伤面积及深度诊断是（）

A.46%，浅Ⅱ度

B.40%，深Ⅱ度

C.5%，浅Ⅱ度

D.54%，Ⅱ度

E.30%，Ⅲ度