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问题 解答题

直接写出各组数的最大公因数．

24和36______；34和51______；6、12和72______；1和1000______．

答案

24=2×2×2×3，

36=2×2×3×3，

所以24和36的最大公因数为：2×2×3=12；

34=2×17，

51=3×17，

所以34和51的最大公因数为17；

因为72是12的倍数，72是6的倍数，12是6的倍数，所以6、12、和72的最大公因数为：6；

因为1000是1的倍数，所以1和1000的最大公因数为1；

故答案为：12、17、6、1．

阅读理解

Reading Comprehension

　　We talked to 300 people. One hundred were aged 11 to 18. One hundred were between 19 and 26 years of age. One hundred were 27 to 35 old. We asked them what they liked to do in their free time. The results are in the chart.

1.People aged 11-18 least enjoyed _____.

A. taking a walk

B. watching TV

C. going to the movies

D. playing computer games

2.In the 19-26 group, how many people enjoyed playing computer games?

A. 75

B. 80

C. 60

D. 25

3.What did most people enjoy doing?

A. Watching TV and playing computer games.

B. Playing computer games and taking a walk.

C. Taking a walk and going to the movies.

D. Going to the movies and watching TV.

4.Which of these sentences is true?

A. People aged 27-35 enjoyed playing computer games best.

B. People aged 11-18 enjoyed going to the movies best.

C. People aged 19-26 enjoyed playing computer games more than watching TV.

D. Most people like watching TV.
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单项选择题

Are you interested in seeing the beautiful fall foliage of New England but tired of traffic jams and overbooked hotels Then this year forget the crowds in New England and see the beautiful colors of autumn in the Catskills.
These rugged mountains in New York State, just 90 miles northwest of New York City, are famous for the legendary tales of Rip Van Winkle, and more recently for the summer hotels mat sprang up in the region during the 1940s, 1950s, and 1960s. Families trying to escape the heat of New York City found the Catskills to be the perfect place to stay for a month or so each summer. By the late 1950s there were over 500 resorts and hotels offering nighttime entertainment as well as all kinds of outdoor activities. Famous comedies like Jackie Gleason, Joan Rivers, and Sid Caesar all got their start touring the hotel clubs here. Since the introduction of air-conditioning and cheaper air travel, however, families have stopped coming to the Catskills in such large numbers, chasing instead more distant locations at different times of the year. Many of the Catskills hotels closed in the 1970s, but some remain and have expanded and changed their facilities to meet the needs of today’s visitors.
Currently, there are many activities available to the traveler besides witnessing the changing colors of the leaves. There is an all-organic sheep farm where visitors can see how a traditional sheep farm operates. There are also hundreds of miles of scenic drives in the area. Route 42, for instance, is an excellent site for spotting bald eagles. For more information on vacations in the Catskills, call the office of Public Information.

The word "rugged" underlined in Paragraph 2 means ______.

A. barren
B. rough
C. tall
D. lush
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