问题 填空题

某同学为了研究苯的同系物与酸性高锰酸钾溶液作用的反应规律,进行了一系列实验,获得了以下一系列研究事实:

请根据这些反应事实,归纳出苯的同系物与酸性高锰酸钾溶液反应的规律(2条即可)。

(1)____。 (2)____。

答案

(1)苯的同系物侧链能被酸性高锰酸钾溶液氧化,且不论侧链长短,均氧化为羧基

(2)如果侧链烃基上与苯基相连的碳原子上没有氢原子(没有α氢原子).则这种侧链不能被氧化

阅读理解

阅读理解。

     You may have heard of the famous saying, "East or West, home is the best."

     What does the word "home" mean to you? How do you say the word in French? In Chinese? In your

language? Although people usually know what the word means, it sometimes has no exact translation. It's

not surprising, because the idea of home is"different from country to country, and from person to person.

A home is more than a roof and four walls. It's the cooking, eating, talking, playing and sleeping that go

on inside. And at home you usually feel safe and relaxed.

     Homes look different in different countries. They also have different things inside. For example, in cold

northern Europe, there's a fire in the living room or kitchen and all the chairs face it. In the south, where

the sun shines a lot and it's more important to keep the heat out, there are small windows and cool stone

floors.

     We asked some people about their homes.

     How often do people move house in your country?

     "In my country many people don't stay in one place for a very long time. They often move every ten

years or so."

                                                                                                                       -Cherry, Boston, USA.

     What a e features (特征) of homes in your country?

     "In Britain, even in town, there's always a garden. We have separate bedrooms and living rooms. But we

don't often have balconies (阳台). The weather isn't warm enough!" 

                                                                                                                        -Pat, Exeter, England

1. The word "home" sometimes has no exact translation because _____.

A. people can't find this word in the dictionary

B. no one knows what it is

C. it has different meanings in different countries

D. people can't understand each other very well

2. According to the passage, at home, you can do everything except _____.

A. making friends

B. cooking and eating

C. playing and talking

D. sleeping and relaxing

3. Why is it important to keep the heat out of the houses in southern Europe? 

A. Because they want to breathe fresh air outside.

B. Because there's a fire in the living room.

C. Because they wear heavy clothes all day long.

D. Because the sun there shines a lot.

4. From the second paragraph, what kind of homes people have depends on _____.

A. whether they are rich or not

B. the climate (气候) they have

C. how old they are

D. whether they live in the city or countryside

5. Which one of the sentences below is true?

A. People in Britain seldom have balconies because it's so hot outside.

B. Some Americans move house several times during their lifetime.

C. Homes look the same in different countries.

D. Houses in northern Europe have big windows and cool stone floors.

单项选择题