问题 问答题 简答题

什么是单一组实验和对照组实验?在实验中为什么设置对照组?

答案

参考答案:

社会调查研究的最基本对象就是现实社会,所要面对的首先是社会的基本要素,另外还有形形色色、种类繁多的具体对象。 

社会有三个基本要素:自然环境、人口和文化。 

社会调查研究具体的、最基本的对象即调查研究单位大致可分为八类:个人;社会组织;阶级和阶层;民族;社区;社会行为;社会产品。

阅读理解
阅读理解。
                                                                                                                   December 25, 2006
         Dear Rose,
         How are you?
         I like your programmes very much. They're very interesting and I can learn a lot from them. I
like travelling and I have won a free four-week trip to England, but I know little about the British way
of life. Would you please write to tell me something about the British meals?
         Thank you.
                                                                                                                                  Yours,
                                                                                                                                Wang Lin

                                                                                                                        January 1, 2007 
        Dear Wang Lin,
        It's very helpful to know something about the British meals before travelling. In many English
houses, people eat four meals a day. They are breakfast, lunch, tea and dinner.
        Breakfast takes place at any time from 7:00 to 9:00 in the morning. They usually have eggs,
bread with butter, cheese and so on. English people drink tea or coffee at breakfast. Lunch comes at
one o'clock. It can be a hamburger or a three-course (三道菜) meal. Afternoon tea is between 4:00
pm and 5:00 pm. Dinner begins at about half past seven. The first course is soup. The next is often
meat or fish with vegetables. Then come fruits of different kinds: apples, pears, bananas and so on.
But not all English people eat like that. Some of them have their dinner in the middle of the day. Their
meals are breakfast, dinner, tea and supper. And all these meals are usually simple.
         Wish you a good time in England!
                                                                                                                                 Yours,
                                                                                                                                  Rose
1. Wang Lin wrote to               .
[ ]
A. say hello to Rose
B. ask Rose about the British meals
C. tell Rose about the free trip
D. tell Rose that he liked her programmes
2. The possible time for breakfast in England is ________.
[ ]
A. from 7:00 pm to 9:00 pm
B. from 7:00 am to 9:00 am
C. from 4:00 pm to 5:00 pm
D. from 4:00 am to 5:00 am
3. In England, afternoon tea often takes place ________.
[ ]
A. before lunch
B. between breakfast and lunch
C. during supper
D. between lunch and dinner
4. The second course at dinner is often ________ at British meals.
[ ]
A. soup
B. cheese
C. bread with butter
D. meat or fish with vegetables
5. Rose answered the letter ________.
[ ]
A. on New Year's Day
B. at the Lantern Festival
C. on New Year's Eve
D. on Christmas Day
判断题