问题 实验题

如图所示,是某种固体物质加热时温度随时间变化的图象,加热在一个标准大气压下进行,且每分钟的供热不变,由图象分析,回答下列问题:

(1)这种物质是            体.

(2)这种物质在AB段是呈            态.

(3)BC 段表示这种物质的           过程,在这个过程中          热量,这个温度称为            ,是            ℃.

(4)CD段表示这种物质呈             态,在这个过程中              热量,温度             

(5)DE段表示这种物质的              过程,在这个过程中,             热量,温度               ,这个温度称为             

答案

(1)晶;

(2)固;

(3)熔化;吸收;熔点;0;

(4)液;吸收;升高;

(5)沸腾;吸收;不变;沸点

阅读理解

In a time of low academic (学术的) achievement by children in the United States, many Americans are turning to Japan, a country of high academic achievement and economic success, for possible answers. However, the answers provided by Japanese preschools are not the ones Americans expected to find. In most Japanese preschools, surprisingly little emphasis is put on academic instruction. In one investigation, 300 Japanese and 210 American preschool teachers, child development specialists, and parents were asked about various aspects of early childhood education. Only 2 percent of the Japanese respondents (答问卷者) listed "to give children a good start academically" as one of their top three reasons for a society to have preschools. In contrast, over half the American respondents chose this as one of their top three choices. To prepare children for successful careers in first grade and beyond, Japanese schools do not teach reading, writing, and mathematics, but rather skills such as persistence, concentration, and the ability to function as a member of a group. The majority of young Japanese children are taught to read at home by their parents.

In the recent comparison of Japanese and American pre­school education, 91 percent of Japanese respondents chose providing children with a group experience as one of their top three reasons for a society to have preschools. 62 percent of the more individually oriented (强调个性发展的) Americans listed group experience as one of their top three choices. An em­phasis on the importance of the group seen in Japanese early childhood education continues into elementary school education.

Like in America, there is diversity (多样性) in Japanese early childhood education. Some Japanese kindergartens have specific aims, such as early musical training or potential (潜力) development. In large cities, some kindergartens are attached to universities that have elementary and secondary schools.

Some Japanese parents believe that if their young children attend a university-based program, it will increase the children’s chances of eventually being admitted to top-rated schools and universities. Several more progressive programs have introduced free play as a way out for the heavy intellectualizing in some Japanese kindergartens.

5. We learn from the first paragraph that many Americans believe ________.

A. Japanese parents pay more attention to preschool education than American parents

B. Japan’s economic success is a result of its scientific achievements

C. Japanese preschool education emphasizes academic in­struction

D. Japan’s higher education is better than theirs

6. Most American respondents believe that preschools should also attach

importance to ________.

A. problem solvingw。       B. group experience

C. parental guidancew。      D. individually oriented development

7. In Japan’s preschool education, the focus is on ________.

A. preparing children academically    B. developing children’s artistic interests

C. tapping children’s potentialw。     D. shaping children’s character

8. Why do some Japanese parents send their children to university-based kindergartens?

A. They can do better in their future studies.

B. They can gain more group experience there.

C. They can be individually oriented when they grow up.

D. They can have better chances of getting a first-rate edu­cation.

单项选择题