问题 问答题 简答题

简述受体特异性的相对性。

答案

参考答案:

临床表现:许多药物除有治疗作用外,同时可能出现副作用,甚至毒性。

受体特异性是相对的:有时同一种药物能和几种不同的受体结合引起效应;有时同一种受体可以为几种不同的药物所结合。

阅读理解

阅读下面的短文,根据文章后所给的题目进行简答.

    These days a green building means more than just the color of the paint. Green building can also

refer to environmentally friendly houses, factories, and offices.

    Green building means "reducing the impact(影响)of the building on the land", Taryn Holowka of

the U.S. Green Building Council in Washington, D. C., said.

    According to Holoeka, building account for 65 percent of total U.S. electricity use.

    Bur green building can reduce energy and water use. Also, the buildings are often located near public

transportation such as buses and subways, ______________________________________.That

could be good for the environment, because cars use lots of gas and give off pollution. Green buildings

are often built on developed land, so that the buildings don't destroy forest.

   Marty Dettling is project manger for a building that put these ideas into action. The Solaire has been

called the country's first green high-rise building. According to Dettling, "We've reduced our energy use

by one-third and our water by 50 percent."

   The Solaire cuts energy in past by using solar power. "On the face of the building we have solar

panels which change the sun's energy into electricity, " Dettling explained.

   The Solaria also has lights that automatically turn off when people leave the room. In addition, the

building has lots of windows, allowing people to use the sun for light during the day. The Solaire cuts

water reusing it.

   Nor everyone is eager to move into a green building, however. Some people think that things like

solar panels cost more money than more traditional energy sources. Anyhow, Holowka said, "It's going

to be big.

1. What is the best title of the passage? (Please answer within 10 words)

______________________________________________________________________________.

2. Which sentence in the passage can be replaced by the following one?

Green buildings will become popular in the future.

______________________________________________________________________________.

3. Please fill in the fourth paragraph with proper words or phrases to complete the sentence. (Please answer within 10 words)

______________________________________________________________________________.

4. Do you think a green building is better than a common building? Why? (Please answer within 30 words.)

_____________________________________________________________________________.

5. Translate the underlined sentence in the fourth paragraph into Chinese.

_____________________________________________________________________________.

问答题