如何提高大学英语四级阅读技巧

This part tests whether a student can understand the correct meaning of a sentence through context .Following questions is often adopted:
The sentence “…” (Line…) means that …
The sentence “…” implies?
What does the sentence “…”mean?
The sentence “…”can be paraphrased as…
This of the following is closest in meaning to the sentence “…?”
No.2 Example :( from CET-4 2002, 1)
For an increasing number of students at American universities, Old is suddenly in. The reason is obvious: the graying of America means jobs. Coupled with the aging of the baby-boom ( 生育高峰) generation, a longer life span means that the nation's elderly population is bound to expand significantly over the next 50 years. By 2050, 25 percent of all Americans will be older than 65, up from 14 percent in 1995. The change poses profound questions for government and society, of course. But it also creates career opportunities in medicine and health professions and in law and business as well. "In addition to the doctors, we're going to need more sociologists, biologists, urban planners and specialized lawyers," says Professor Edward Schneider of the University of Southern California's (USC) School of Gerontology (老年学).
     ……

Question:“…old is suddenly in”(line 1,Paragrah1) most probably means “---“
A  American has suddenly become a nation of old people
B  gerontology has suddenly become popular
C  more elderly professors are found on American campuses
D  by winning the trust of the elderly to promote their own interests.
The answer is B, As to this type of question we can get the clue from (line 3,paragraph 1)
“Couple with the aging of the baby –boom( 生育高峰) generation, a longer life span means that the nation’s elder population is bound to expand significantly over the neat 50 years” So from this sentence we know that American old population has suddenly increased. This type of question, we can get its clue around the sentence, and find more supporting ideas.
5.3 Main—idea type
Each passage has its central idea .The expressions to decide main ideas are as following:
The main idea of the passage is…...
The passage deals mainly with……
The title which best expresses the idea of the passage is……
The main idea of the passage may be best express as……
The passage is mainly concerned with….  The passage illustrates……
What is the main idea/subject/purpose/topic of the passage?
The passage is about……
The author’s purpose in writing this passage is…
The paragraph could be entitled…
Which of the following best sums up the whole passage?
There are several testing items:
No.3 Example: (from CET-4, 2002, 6)
Most episodes of absent-mindedness—forgetting where you left something or wondering why you just entered a room-are caused by a simple lack of attention says Schacter. “You’re supposed to remember something but you haven’t encoded it deeply.”
  ……
Visual cues can help prevent absent-mindedness says Schacter. “But be sure the cue is clear and available” he cautions. If you want to remember to take a medication (药物) with lunch put the pill bottle on the kitchen table—don’t leave it in the medicine chest and write yourself a note that you keep in a pocket.
  Another common episode of absent-mindedness walking into a room and wondering why you’re there. Most likely you were thinking about something else. “Everyone does this from time to time” says Zelinski. The best thing to do is to return to where you were before entering the room and you’ll likely remember.
Question: What is the passage mainly about?
A  the process of gradual memory loss
B  the cause of absent---mindedness
C  the impact of the environment on memory
D  a way of encoding and recalling
The answer is B,this is the main idea type; the first sentence is main idea of the passage
“Most episodes of absent—mindedness –forgetting where you left something or wondering why you just entered a room are caused by a simple lack of attention, says Schacter, ‘You are suppose to remember something ,but you have not encode it deeply’" “so it is so easy to catch the answer B if we find the topic sentence .But topic sentence doesn’t always appear in the first sentence in the passage .Sometimes it appears in the end of the passage or in the middle of the passage, even some passage hasn’t the topic sentence .So under this condition, the student should the conclude the topic sentence by himself according to content of the passage.
5.4 Vocabulary type
This type mainly tests student’s ability to guess the meaning of a certain word in special context, and. students should have a large vocabulary, but that is not enough, they should learn to use some more methods to infer:
A To infer through context
B To infer through analogy
C To infer through word formation
A average patterns are as following: 

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