问题 选择题

下列说法错误的是   (    )

A.如果设“此”为电解质,“彼”为非电解质,不是所有的物质都是非此即彼的;

B.不是所有反应,都遵循由强(如强酸、强碱、强氧化剂或强还原剂等)制弱(如弱酸、弱碱、弱氧化剂 或弱还原剂等)的规律;

C.不是所有自发进行的反应都一定是焓减的过程;

D.在迄今发现的元素中,不一定所有非金属元素(稀有气体除外)都满足条件‘ 主族元素的族序数≥其周期序数’

答案

答案:D

只有化合物才可能是电解质或非电解质,A正确。例如H2S+CuSO4=CuS+H2SO4,B正确。根据△G=△H-T·△S可知,只要△G小于0,反应即自发进行,C正确所有非金属元素(稀有气体除外)都满足条件‘ 主族元素的族序数≥其周期序数’,D不正确。答案选D。

阅读理解

阅读理解。

     There are thousands of things to be sold that are of all colors and shapes in a supermarket, making you

believe that they are good enough for you to have a try. How? Packaging (包装) is the quiet but persuading

(有说服力的) salesman.

     There on the shelves, each bottle, can and box has been carefully designed to speak to the inner self of

the consumer (消费者), so that he is buying not only a product (产品) but also his belief in life. Scientists

have studied on this and found that the look of the package has a great influence (影响) on the "quality" of

the product and on how well it sells, became "Consumers generally cannot tell between a product and its

package. Many products are packages and many packages are products," as Louis Cheskin, the first social

scientist studying consumers' feeling for packaging, noticed.

     Colors are one of the best tools in packaging. Studies of eye movement have shown that colors draw

human attention quickly. Take V8 for example. For many years,the bright red color of tomatoes and carrots

on the thin bottle makes you feel that it's very good for your body. And the word "green" today can keep

food prices going up.

     Shapes are another attraction.Circles often mean happiness, because they are pleasing to both the eye

and the heart. That's why the round yellow M sings of McDonald's are inviting to both young and old.

     This new consumer response (反应) to the colors and shapes of packages reminds (提醒) producers and

sellers that people buy to meet the needs of both body and heart.

1. According to the passage, ______ seems to be able to persuade a consumer to buy the product.

A. the pleasing color of the package

B. the special taste of the product

C. the strange shape of the package

D. the belief in the product

2. It can be inferred (推测) from the passage that V8 is a kind of ______.

A. vegetable dish

B. healthy juice

C. hard drink

D. red vegetable

3. And the word 'green' today can keep food prices going up

    This sentence suggests that consumers today are ______.

A. starting to notice the importance of new food

B. enjoying the beauty of nature more than before

C. beginning to like green vegetables

D. paying more attention to their health

4. What's the best title of the passage?

A. Colors and Shapes

B. Packaging Can Talk

C. The response to the packages

D. Colors and Shapes Can Draw People Attention

判断题