题目内容
When you practice reading with passages shorter than book length, do not try to take in each word separately, one after the other. It is much more difficult to grasp the broad theme of the passage this way, and you will also get the stuck on individual words which may not be absolutely essential to a general understanding of the passage. It is a good idea to skim through the passage very quickly first to get the general idea of each paragraph. Titles, paragraph headings and emphasized words can be a great help in getting this skeleton outline of the passage. It is surprising how many people do not read titles, introductions or paragraph headings. Can you, without looking back, remember the title of this passage and the heading of this paragraph?
Most paragraphs of a passage or chapter have a 'topic sentence' which expresses the central idea. The remaining sentences expand or support that idea. It has been estimated that between 50% and 90% of all expositive（说明的）paragraphs in English have the topic sentence first. Always pay special attention to the first sentence of a paragraph, it is most likely to give you the main idea.
Sometimes, though, the first sentence in the paragraph does not have the feel of 'main idea' sentence. It does not seem to give us enough new information to justify a paragraph. The next most likely place to look for the topic sentence is the last sentence of the paragraph.
Remember that the opening and closing paragraphs of a passage or chapter are particularly important. The opening paragraph suggests the general direction and content of the piece, while the closing paragraph often summarizes the very essence（精髓）.
1.It is a good idea to skim through a passage quickly first ____________.
A. at about 315 w.p.m.（words per minute）
B. to get the general idea of each paragraph
C. so that you can take in each work separately
D. to make sure you get to the end at least once
2.The topic sentence of an expository paragraph in English _____________.
A. usually comes in the middle
B. is most likely to be found at the end
C. is most often at the beginning
D. is usually left out in expository writing
3.Most expository paragraphs in English have a clearly defined topic sentence. In such paragraphs the topic sentence comes first ________.
A. in about 5% of cases B in about 80% of cases
C. in about 20% cases D. very rarely
4.Sometimes we know the first sentence is not the topic sentence because ____________.
A. it does not seem to give us enough new information
B. it is not long enough
C. it does not come at the beginning
D. it does not make a complete sentence
5.The closing paragraph of a piece of writing ____________.
A. is not really very important
B. is often unnecessary repetition
C. often comes at the end
D. often summarizes the essence of the passage
1.B
2.C
3.B
4.A
5.D
【解析】
试题分析：当你练习阅读时，不要孤立地去分析每个词的意思。那样做很难把握文章的大意，你的阅读也可能会被不是很重要的词给打断。先快速浏览文章了解大意，是不错的阅读方法。
1.It is a good idea to skim through the passage very quickly first to get the general idea of each paragraph.”可知，快速浏览文章了解大意是一个很好的办法，故选B。
2.It has been estimated that between 50% and 90% of all expositive（说明的）paragraphs in English have the topic sentence first.”可知，说明文的主题句一般都是在开头，故选C。
3.between 50% and 90% of all expositive（说明的）paragraphs in English have the topic sentence first”可知，50%-90%的说明文的主题句都是在开头，符合这个范围的只有B项，故选B。
4.It does not seem to give us enough new information to justify a paragraph.”可知，有时候，首句包含的信息并不多，并不是主题句，故选A。
5.while the closing paragraph often summarizes the very essence”可知，文章最后一段通常是总结文章的精髓，故选D。
考点：教育类短文阅读
