实验室用石灰石与稀盐酸反应制取二氧化碳．若要制取4.4g二氧化碳，需要溶质的质量

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

中效胰岛素是（）

A.锌结晶胰岛素、半慢胰岛素锌悬液

B.半慢胰岛素锌悬液、中性鱼精蛋白锌胰岛素

C.慢胰岛素锌悬液、鱼精蛋白锌胰岛素

D.慢胰岛素锌悬液、中性鱼精蛋白锌胰岛素

E.特慢胰岛素锌悬液、鱼精蛋白锌胰岛素

下列各项中哪一项的行为符合《消费者权益保护法》的规定

A．某个体工商户没有在其店里出售的商品上明码标价
B．某市消费者协会向消费者推荐一种保健用品，但未收取任何报酬
C．某超市店员出售大型健身器械时未向顾客说明其正确的使用方法，只给了顾客一张产品说明书，该说明书上有使用方法介绍
D．甲服装公司租赁乙百货商场的部分柜台进行营业，并标明其名称和产品商标，后甲将其租赁的部分柜台转租给丙服装厂，但丙在经营过程中未标明其名称，与甲公司共用甲的名称标记

关于脑膜炎皮疹，叙述正确的有（）

A.多为瘀点、瘀斑，压之不褪色

B.全身皮肤及黏膜散在分布

C.大瘀斑中央可发生坏死

D.四肢皮肤可见荨麻疹

E.偶可见脓疱疹

某固定资产原值为15万元，预计净残值为1万元，使用年限为5年，按年数总和法计提折旧，则第三年应提折旧额为( )万元。

A．1.87

B．2.16

C．2.80

D．3.73