问题 单项选择题 A1/A2型题

下列哪项不是载脂蛋白的功能()

A.构成并稳定脂蛋白的结构

B.修饰并影响与脂蛋白代谢有关的酶的活性

C.作为脂蛋白受体的配体

D.参与脂蛋白代谢过程

E.引起动脉粥样硬化

答案

参考答案:E

解析:动脉粥样硬化是由脂蛋白引起而不是载脂蛋白。

阅读理解

Downing the last drop of an expensive famous brand H2O as well as remembering to throw the empty bottle in the recycling bin, makes you feel pretty good about yourself, right? It shouldn’t. Even when the bottles are recycled, there are all kinds of other consequences of swallowing bottled water, says Melissa Peffers, the air-quality program manager for Environmental Defense.

The containers are often filled in faraway lands, then shipped from abroad, and stored in refrigerators at your local store. Compare that with the influence on environment of turning on your tap, filling a glass, and drinking up!

Anyone who is choosing bottled water for health reasons is misguided, says Peffers, “Most bottled water is just tap water.” And what comes out of your tap is carefully monitored to follow the strict rules. Consider another fact that bottled water is surprisingly expensive, especially when compared with the alternative, which is almost free, and it is astonishing that America’s desire for bottled water seems impossible to satisfy, reaching nearly 30 billion bottles a year.

“My parents’ generation never had bottled water,” says Isabelle Silverman, an Environmental Defense legal adviser. She has made a commitment to going bottle free. “You don’t need to fetch it home from the store, and it’s cheaper,” she adds.

Bottled water’s role as a status symbol needs to change, Peffers points out. So when a waiter at an expensive restaurant offers  “And what’s your drink?” that’s no reason to forget your conviction(信念). “Don’t be afraid to say, ‘I’ll have tap.’ Say it loud enough that the other tables nearby can hear you,” Peffers says. “And then spend that money on a dessert.”

小题1:In the first paragraph, the underlined sentence “It shouldn’t.” suggest that people _______.

A.shouldn’t feel pleased with finishing the water in the bottle.

B.shouldn’t feel good about drinking an expensive brand H2O.

C.shouldn’t be pleased with just recycling empty bottles.

D.shouldn’t be satisfied with drinking only bottled water.小题2:According to the author, tap water is _______.

A.as safe as bottled water

B.morel likely to be polluted

C.healthier than bottle water

D.less convenient than bottled water小题3:The underlined part “going bottle free” (in Para. 4) means “_______”.

A.making bottled water free

B.giving up bottled water

C.recycling use water bottles

D.providing free water containers小题4:Why does Peffers ask people to say “I’ll have tap.” Loudly?

A.To encourage them to set an example for others to follow.

B.To advise them to save the money for one more dessert.

C.To remind them to be aware of their social status.

D.To persuade them to speak confidently in public.

单项选择题