问题 探究题

用如图所示装置进行实验,比较不同液体的吸热能力。在两个相同的烧杯中分别装入初温、质量相同的水和植物油,用相同的酒精灯加热至沸腾,实验中只记录了植物油和水沸腾时的温度,发现植物油的沸点比水的高。

(1)通过水沸腾时温度计的局部放大图,可知水的沸点是________℃,说明此时的大气压________标准大气压。

(2)实验中,将它们加热至沸腾,植物油所需时间较长。说明植物油吸收的热量比水吸收的热量________。

(3)通过以上实验过程_________(选填“能”或“不能”)比较出植物油和水的比热容的大小关系。

答案

(1)98;小于

(2)多

(3)不能

阅读理解

In England , afternoon tea is the most informal (非正式)meal of a day .It is taken between four and five. If you are a friend of the family, you may come for tea at any time. Very often it is not taken at a table. The members of the family and visitors take the tea in the sitting room. Each person has a cup and saucer (茶盘), a spoon (调羹) and a small plate for bread and butter (黄油) and cakes. By the way, do not help yourself to cakes first, bread and butter first, and then cake. Do remember: Though you can eat as much as you want, do not put more than(超过) one piece of bread or cake on your plate each time.

小题1:In England, afternoon tea is usually taken ________ .

A.between breakfast and lunch  

B.in the middle of day

C.early in the afternoon

D.late in the afternoon小题2:A real English afternoon tea has___________.

A.tea only

B.both tea and food

C.tea food and vegetables

D.the same things as other meals小题3:If you want to have afternoon tea in a friend's home, _______________. 

A.you must send a message before you go

B.you must take food with you

C.you may go only when you're asked to

D.you may go at any time小题4:Help yourself to ______________.

A.cake first

B.bread-and-butter first

C.either bread first or cake first

D.only one piece of bread or cake小题5:Which of the following is NOT true?

A.People don't use the same spoon for afternoon tea.

B.Afternoon tea is often taken in the sitting room.

C.For afternoon tea, people use cups only.

D.Afternoon tea is often taken with bread and cake.

单项选择题