閱讀理解
Every object has weight. But the center of its weight is not always in the middle of the object, If the top of an object is heavier than its bottom, it will fall over easily. We say that its center of gravity
(引力)is high. But if the bottom is heavier, it won't fall easily. Then we say that its center of gravity is low.Look at the first picture, lifts empty box must fall over, bemuse its center of gravity (C) is not above the line of its bottom (AB).
Now look at the second picture. There is some heavy iron at the bottom of this box. It will not fall, because its center of gravity is above its bottom.
(1) Please point out which box will not fall?
(2) From the passage, we can infer that the Leaning Tower of Pisa does not fall is because_______.
[
]A
.the top of the tower is heavier than its bottomB
.the bottom of the tower is not heavier than its topC
.its center of the gravity is still above the line of its bottomD
.its center of the gravity is not above the line of its bottom(3) If an object has a low center of gravity, _______.
[
]
A .it won't fall |
B .it won't fall easily |
C .it is certain to fall over |
D .its top must be heavier |
(4) Which of the following is TRUE according to the passage?
[
]A
.The center of the weight is always in the middle of the objectB
.The center of the weight is always on the objectC
.The center of gravity is not always in the middle of the objectD
.The center of the gravity is always high(5) The passage is mainly about _______.
[
]
A .why things fall over |
B .a low center of gravity |
C .a high center of gravity |
D .that everything has weight |
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科目:初中英語 來源:復(fù)習(xí)與測評 單元綜合測試卷 七年級下冊(配合牛津英語) 牛津版 題型:050
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科目:初中英語 來源:浙江省衢州市2011年初中畢業(yè)生學(xué)業(yè)考試英語試題 題型:050
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科目:初中英語 來源: 題型:050
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科目:初中英語 來源:人教新課標(biāo)初一下冊練習(xí) 人教新課標(biāo) 題型:050
閱讀理解
We call the Chinese New Year the Spring Festival. There is a name for each Chinese year. We call it the year of the sheep, the year of the monkey, the year of the dragon or the year of the pig. And this year is the snake. I express my best wishes for all Chinese including all Harbiners a wonderful, healthy and happy Year of the snake.
Before the Chinese New Year's Day, people are busy shopping and cleaning their houses. Their yards and houses are very clean on New Year's Eve. Families make dumplings on that day. Everyone in China likes to eat dumplings. This is our Chinese tradition to have a reunion dinner on Chinese New Year' s Eve.
After dinner, all the family stay up late to welcome the New Year. On the first day of the New Year, people put on their new clothes and go to visit their friends. They say Happy New Year and some other greetings to each other. People usually have a very good time during the festival.
(1)This year (2003) is the year of ________.
[ ]
(2)Last year (2002) is the year of ________.
[ ]
A. the monkey
B. the dragon
C. the horse
D. the tiger
(3)How do Chinese people usually spend New Year' s Eve? ________.
[ ]
A. They put on new clothes and go to the park.
B. They are busy shopping and cleaning their houses
C. They make dumpling, have a big dinner and stay up late to welcome the New Year.
D. They visit their friend and talk about the New Year.
(4)On New Year's Day, people say. ________ to each other when they meet.
[ ]
A. Merry Christmas
B. Happy New Year
C. Good luck
D. glad to meet you
(5)The Spring Festival means ________.
[ ]
A. Christmas Day
B. New Year
C. Thanksgiving Day
D. the Chinese New Year.
(6)My daughter was born in 1971. Hers is the year of the ________.
[ ]
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科目:初中英語 來源: 題型:050
閱讀理解
We call the Chinese New Year the Spring Festival. There is a name for each Chinese year. We call it the year of the sheep, the year of the monkey, the year of the dragon or the year of the pig. And this year is the snake. I express my best wishes for all Chinese including all Harbiners a wonderful, healthy and happy Year of the snake.
Before the Chinese New Year's Day, people are busy shopping and cleaning their houses. Their yards and houses are very clean on New Year's Eve. Families make dumplings on that day. Everyone in China likes to eat dumplings. This is our Chinese tradition to have a reunion dinner on Chinese New Year' s Eve.
After dinner, all the family stay up late to welcome the New Year. On the first day of the New Year, people put on their new clothes and go to visit their friends. They say Happy New Year and some other greetings to each other. People usually have a very good time during the festival.
(1)This year (2003) is the year of ________.
[ ]
(2)Last year (2002) is the year of ________.
[ ]
A. the monkey
B. the dragon
C. the horse
D. the tiger
(3)How do Chinese people usually spend New Year' s Eve? ________.
[ ]
A. They put on new clothes and go to the park.
B. They are busy shopping and cleaning their houses
C. They make dumpling, have a big dinner and stay up late to welcome the New Year.
D. They visit their friend and talk about the New Year.
(4)On New Year's Day, people say. ________ to each other when they meet.
[ ]
A. Merry Christmas
B. Happy New Year
C. Good luck
D. glad to meet you
(5)The Spring Festival means ________.
[ ]
A. Christmas Day
B. New Year
C. Thanksgiving Day
D. the Chinese New Year.
(6)My daughter was born in 1971. Hers is the year of the ________.
[ ]
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