任务型阅读 (共10小题；每小题1分，满分10分)
注意：每个空格只填1个单词
The health dangers of smoking have been well reported. For years, doctors have warned that smoking can cause lung cancer. Studies also have linked smoking to several other kinds of cancer, heart attacks and other diseases, lung diseases, and a number of other medical problems. The repeated health warnings have had an effect. Thousands of people have stopped smoking. But as many people have learned, stopping smoking can be very difficult.
A major problem apparently is the nicotine, a poisonous substance found in tobacco. Small amounts of nicotine are released as tobacco is burned. And over many years of smoking, a person’s body becomes dependenton the substance. A try to stop smoking brings the problems of nicotine withdrawal（脱瘾过程）.
American medical researchers have found that nicotine withdrawal causes people to become angry very easily, aggressive, worried and unable to think sharply. Many people who have tried to stop smoking would confirm those findings.
To help people give up smoking, some tobacco companies have proposed chewing tobacco, or using snuff as safe substitutes（替代物）. Snuff is a tobacco powder that usually is breathed in. But many people put it between their gum and cheek.
A group of British scientists said recently that many lives could be saved by a major program to get cigarette smokers to change to snuff. An American scientist, Allan Blum, disagreed. Dr. Blum argued that snuff, put in the mouth, can cause gum disease, teeth problems and throat problems that lead to cancer. Dr. Blum also warned against chewing tobacco as a substitute for smoking. He said chewing tobacco can lead to cancer of the mouth, throat or digestive system.
Medical researchers say another possible substitute for smoking is a special nicotine chewing gum. The gum is already sold in Europe and Canada. A report says research shows that the chewing gum will increase the amount of nicotine in a person’s blood. This helps satisfy some people’s desire for a cigarette. However, the report says, the chewing gum also leads to some unpleasant side effects. And it may be dangerous for people with heart problems.
Two other American scientists say they have found that the most effective way to stop smoking is to do it completely, suddenly, all at once. The report by Saul Shirtman and Dr. Murray Jogbett says that by stopping all at once, the worst problems of nicotine withdrawal are over in just a few days. But, they say, by continuing to smoke, even a little less each day, the problems of withdrawal never end completely.
Bad effects of smoking
| Many kinds of disease and a number of other medical (91) ▲ are connected with smoking.
|
Difficulty in stopping smoking
| The (92) ▲ for this is that smokers are (93) ▲ on nicotine, a poisonous substance in tobacco, and people (94) ▲ to stop smoking have emotional problems and are unable to think sharply.
|
(95) ▲ to stop smoking
| Looking for substitutes for smoking
| Snuff
| Causing gum disease, teeth problems and throat problemsthat (96) ▲cancer.
|
Chewing tobacco
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本题信息：英语完形填空难度一般 来源:未知
本试题 “任务型阅读 (共10小题；每小题1分，满分10分)注意：每个空格只填1个单词The health dangers of smoking have been well reported. For years, doctors have w...” 主要考查您对 序数词 等考点的理解。关于这些考点您可以点击下面的选项卡查看详细档案。
序数词的概念：
表示顺序的数称为序数词。如：first, second, third, fourth。 序数词的构成与用法：
1、序数词的构成：
①一般来说，是由相应的基数词加词尾th构成。
例：four＋th→fourth
six＋th→sixth
seven＋th→seventh
ten＋th→tenth
②下面这些基数词在变为序数词时，有特殊的变化。
例：one→first
two→second
three→third
five→fifth
eight→eighth
nine→ninth
twelve→twelfth
③十位整数序数词的构成方法是将基数词的词y变成i，然后再加eth。
例：twenty→twentieth
thirty→thirtieth
forty→fortieth
ninety→ninetieth
④两位或两位以上的基数词变成序数词时，仅将个位数变成序数词。
例：twenty－one→twenty－first
thirty－five→thirty－fifth
a hundred and fifty－three→a hundred and fifty－third
2、序数词的用法：
①序数词在使用时，一般加上定冠词。
例：the first book
the second floor
the third day
the fourth week．
②序数词在多数情况下都用作定语，有的也可以作表语、主语和宾语。
例：The may1st is Labour Day. 五月一日是劳动节。
My room is on the second floor. 我的房间在二楼。
The first is larger than the secon.（主语）第一个比第二个大。
Read the book from the first.（宾语）从开头读这本书。
You'll be the sixth to write.（表语）你将是第六个写的。
③序数词的前面可以加上不定冠词，用来表示“再一”，“又一”的意思。
例：You may have a third try. 你可以第三次尝试。 序数词知识体系：
约数的表达方法：
用tens/dozens/scores/hundreds/thousands/millions of 表示“几十、几百、上千、成千上万”等。
如：The boy bought dozens of pencils.
Thousands of people died in the earthquake.
注意： (A)：dozen, score, hundred, thousand, million等表示确切数量时，不用复数。
如：five dozen (of) eggs 五打鸡蛋
hree hundred people 三百个人
分数词的构成和用法：
1）分数词构成法：
分数词（FractionalNumerals）由基数词和序数词构成，基数词代表分子，序数词代表分母。除了分子为1的情况下，序数词都要用复数形式：
如：1/4：one-fourth
5/9：five-ninths
2/3：two-thirds
17/5：three and two-fifths
7/12：seven-twelfths
379/8：forty-seven and three-eighths
此外还有下面表示法：
如：1/2：a(one) half
1/4：a(one) quarter
3/4：three-quarters
9/4：two and a quarter
3/2：one and half
31/4：seven and three quarters
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