All children in the United States have to receive an education,but the law does not say they have to be educated at school.A number of parents prefer not to send their children to school.46 There are about 300，000 home-schoolers in the United States today.Some parents prefer teaching their children at home because they do not believe that public schools teach the correct religious values,others believe they can provide a better educational experience for their children by teaching them at home.47

David Guterson and his wife teach their three children at home.Guterson says that his children learn very differently from children in school.48 For example,when there is heavy snowfall on a winter day,it may start a discussion or reading about climate,snow removal equipment,Alaska,polar bears,and winter tourism.Or a spring evening when the family is out watching the stars is a good time to ask questions about satellites and the space program.49

Home schooling is often more interesting than regular schools,but critics say that home-schoolers are outsiders who might be uncomfortable mixing with other people in adult life.50 However,most parents don't have the time or the desire to teach their children at home,so schools will continue to be where most children get their formal education.

练习：

A.Interestingly,results show that home-schooled children quite often do better than average on national tests in reading and math.

B.Critics also say that most parents are not well qualified to teach their children.

C.Learning starts with the children's interests and questions.

D.Children who are educated at home are known as"home-schoolers"。

E.In some countries,there are children who are educated by their parents at home instead of by teachers at school.

F.If the Brazilian rain forests are on the TV news,it could be a perfect time to talk about how rain forests influence the climate,how deserts are formed,and how the polar ice caps affect ocean levels医学全在线www.med126.com.

解每道题时只需要阅读该题所在段落，不需要阅读其他段落。往往通过阅读该题目的前后句就能够确定答案。

1.利用转折关系来做题。

对于46题，我们可以阅读其前面两句话可知，法律没有规定孩子们必须在学校里接受教育，这句话的潜台词就是有一些孩子没有在学校里接受教育，那么他们在哪里接受教育呢？那么就学生而言，at school相对应的应该是at home，所以选D.

2.利用归纳总结关系来做题。

对于47题，出现在第一段的末尾。在这一段中，一直在对比在学校里接受教育和在家里接受教育，作为总结句，应该对这两种教育形式的优劣作出对比总结。在六个选项中，只有A和E提到了这两种教育形式，但只有A正确，其中的results暗示了正确答案。

3.利用总分关系来解题。

对于48题，从例证词for example我们就可得知，48空中必须出现一个具有概括意义的名词而且这个名词必须包括For example后所举的例子。通过阅读48题后面的句子：冬天下雪时他们与孩子讨论有关气候问题与除雪设备，讨论阿拉斯加、北极熊、冬季旅游等话题。在春天的夜晚，举家出去看星星，然后问孩子一些有关卫星、太空项目等方面的问题。这些讲的是孩子感兴趣的话题，因此正确答案选C.

4.利用并列关系解题。

对于49题，应当是48题的延续。49题作为第二段的最后一句，要么是对该段的总结，要么是For example后例证的并列。作为总结性的答案在选项中已经没有了，只可能是并列关系，因此选F.

5.利用关键词来解题。

对于50题，我们可以完全用关键词来解题。在最后一段第一句中出现了critics这个单词，由此可见该段主要讲批评家对home schooling所持的态度，在六个选项中只有B答案中出现了critics这个词，因此只能选B.

6.利用时间关系来解题。