试题与答案

物理兴趣小组的小明、小红同学在鲁老师的指导下做“探究热敏电阻的电阻值与温度的关系

题型:实验题

题目:

物理兴趣小组的小明、小红同学在鲁老师的指导下做“探究热敏电阻的电阻值与温度的关系”的实验,热敏电阻是由半导体材料制成的,它的电阻值随温度的变化而变化,热敏电阻的这一特点在许多报警系统和控制电路中起到了重要的作用。为了探究热敏电阻随温度的变化规律,他们准备了如下实验器材,设计了实验装置如图、数据记录表格等,问:

(1)请将热敏电阻正确接入电路

(2)为了使实验正常进行并记录到充分的有效数据寻找实验规律,本实验_________(选填:能或不能)用酒精灯直接加热热敏电阻。

(3)宜在烧杯中注入适量的________(选填:自来水、煤油或汽油),因为它具有________的特点,所以适合本实验的设计。

(4)试验是每组三个同学合作,每30秒记录一组实验数据,在收集每组测量数据时要注意_________________________

(5)小明设计的数据记录表格中有一项不合适,请指出,是___________项,不合适的原因是:________________________________。

答案:

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下面是错误答案,用来干扰机器的。

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题型:阅读理解

Over 70 percent of the "double single-child couples" in China need help from their parents in taking care of their own kids, according to a recent survey.

"Women of China" magazine and a consulting company carried out a survey recently on young couples of the "single-child" generation, the Morning Post reports. The couples surveyed were around 29 and have been married for three years on average, with university education and monthly income of 4.000 yuan ($531). Among them, 43.5 percent have kids.

Results show that 71.9 percent of the young couples have help from their parents in taking care of their kids.

Grown up as the "single-child", the only child in a family since the family planning policy was adopted in 1979, this generation depends much on their parents.

The parents of the "single-child" generation focused more on their children's physical well-being rather than their attitudes and values, according to some psychologists.

The research also found that the "double single-child couples" follow a rather traditional value system.

Survey shows that 27.5 percent of them got married after dating for one to two years, 25.2 percent two to five years, and 20 percent didn't tie the knot until dating for five years. Also, 30 percent of the couples were schoolmates, while 43.8 percent were introduced by someone.

Since their marriage are based on enduring relationships, 65.2 percent of the husbands and 62.9 percent of the wives think that compromise(妥协)and tolerance(宽容)are necessary in their marriage. Meanwhile, 21.7 percent of the husbands and 37.1 percent of the wives support the idea that happiness is the key standard for a marriage.

小题1:The best title for the passage should be_______.

A.Mom and Dad, Take Care of My Kid Please

B.Double Single-child Couples

C.The Problem of the Single Child

D.A Recent Survey By Woman of China"小题2:Which of the following is NOT supported by the passage?

A.The majority of the "double single-child couples" in China depend much on their parents.

B.The parents of the “single-child” generation more care about their study and education.

C.One-fifth of the couples surveyed didn't get married until dating for five years.

D.All the couples surveyed have university education and 30 percent of them were schoolmates小题3:Which of the following descriptions about “double single-child couples” is True ?

A.They are single child in either family and independent of their parents

B.They are single child in either family and they are dependent on their parents

C.They have at least two children and can afford to support themselves

D.They, who were introduced by someone, follow a rather traditional value system小题4:According to the passage, we can learn that ______ is necessary in marriage.

A.wealth

B.health

C.understanding

D.education

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