重氮化法中加入KBr的目的是加快反应速度。

历史上第一个股指期货品种是（）。

A.道琼斯指数期货

B.标准普尔500指数期货

C.价值线指数期货

D.香港恒生指数期货

Lisa was running late．She had a lot to do at work, plus visitors on the way; her parents were coming in for Thanksgiving from her hometown．But as she hurried down the subway stairs, she started to feel uncomfortably warm．By the time she got to the platform, Lisa felt weak and tired - maybe it hadn't been a good idea to give blood the night before, she thought．She rested herself against a post close to the tracks．

Several yards away, Frank, 43, and his girlfriend, Jennifer, found a spot close to where the front of the train would stop．They were deep in discussion about a house they were thinking of buying．

But when he heard the scream, followed by someone yelling, "Oh, my God, she fell in!" Frank didn't hesitate．He jumped down to the tracks and ran some 40 feet toward the body lying on the rails．"No! Not you! his girlfriend screamed after him．

She was right to be alarmed．By the time Frank reached Lisa, he could feel the tracks shaking and see the light coming．The train was about 20 seconds from the station．

It was hard to lift her．She was just out．But he managed to raise her four feet to the platform so that bystanders could hold her by the arms and drag her away from the edge．That was where Lisa briefly re-gained consciousness, felt herself being pulled along the ground, and saw someone else holding her purse．

Lisa thought she' d been robbed．A woman held her hand and a man gave his shirt to help stop the blood pouring from her head．And she tried to talk but she couldn't, and that was when she realized how much pain she was in．

Police and fire officials soon arrived, and Frank told the story to an officer．Jennifer said her boyfriend was calm on their 40 - minute train ride downtown - just as he had been seconds after the rescue, which made her think about her reaction at the time．"I saw the train coming and I was thinking he was going to die．"she explained．

小题1:What was the most probable cause for Lisa' s weakness?

A．She had run a long way．

B．She felt hot in the subway．

C．She had done a lot of work．

D．She had donated blood the night before．小题2:Why did Jennifer try to stop her boyfriend?

A．Because they would miss their train．

B．Because he didn't see the train coming．

C．Because she was sure Lisa was hard to lift．

D．Because she was afraid the train would kill him．小题3:How did Frank save Lisa?

A．By lifting her to the platform．

B．By helping her rise to her feet．

C．By pulling her along the ground．

D．By dragging her away from the edge．小题4:The passage is intended to _____．

A．warn us of the danger in the subway

B．show us how to save people in the subway

C．tell us about a subway rescue

D．report a traffic accident

与CM/非代理型模式相比，CM/代理型模式合同结构具有的特点包括______。

A．CM单位介入项目时间较早

B．CM单位与各分包商签订分包合同，与供货商签订供货合同

C．CM单位的身份是进行实质性施工管理，它将不直接从事施工活动

D．CM单位与各分包商或供货商之间没有合同关系，因此CM单位所承担的风险比非代理型减少

E．业主直接与各分包商或供货商签订合同，与CM/非代理型模式相比，业主所签合同数量明显增加

What have you learned about Susan().

A.She was as tall as my shoulder.

B.She leaned her head on my shoulder.

C.She cried on my shoulder.

D.She looked at things over my shoulder.

在第二次世界大战中，攻克德国国会大厦的军队是[ ]

A．英军

B．英法联军

C．美英联军

D．苏军