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英才點津系列答案科目：高中英語 來源： 題型：
C ★★★★★
Farmers digging a field near Chelsea,Michigan,were surprised to uncover a nearly complete mammoth skeleton The mammoth once lived there about 12 ,000 years ago. The Ice Age bones raise a question about whether people or a changing climate killed the beasts.
Researcher Dan Fisher is from the University of Michigan. He believes that prehistoric people killed the newly found mammoth,and put what they didn't immediately eat in a freezing lake. Other scientists say they are not certain what killed the creature until the bones are examined for cut marks and other evidence.
There is little evidence that humans hunted mammoths,says Donald Grayson of the University of Washington. A paper notes that of 76 Ice Age mammal kill sites,only 12 in the whole of North America suggest human hunting. That suggests that over-hunting was not the primary cause of the extinction of the mammoth.
Climate might have been key to the disaster. As humans were moving onto the continent,the global climate was rapidly changing,moving from cold and dry to warm and wet.
This changing climate rapidly swept out the cool,dry grasslands that mammoths preferred. Combined with other (生態(tài)的) changes,such as the arrival of bison (野牛) from Europe and Asia and forests springing up here grasslands once spread,mammoths were driven out of their former living places. The very last of the mammoths on Wrangel Island off northern Siberia died out about 4 ,000 years ago.
Extinction is rarely the result of a single cause. Perhaps,as the Chelsea mammoth slowly tells its secrets,it will add a little more to the continuing discussion over life and death during the Ice Age.
9. What do we know about the newly found mammoth skeleton?
?. It was found in a freezing lake.
B. It was discovered by a scientist,
C. There were cuts on the skeleton.
D. Most of the skeleton were discovered.
10. The paper mentioned in Paragraph 3 proves that
A. mammoths were rare in North America
B. there were 76 mammal kill sites in North America
C. mammoths were overhunted by prehistorical humans
D. overhunting was not the leading cause of mammoths’ extinction
11. Because of the changing climate during the Ice Age, .
A. mammoths could get more food
B. mammoths were suffering from habitat loss
C. mammoths had to move to cool and dry places
D. forests mammoths liked were replaced by grasslands
12. What would be the best title for the text?
A. What killed these giants
B. Mammoths and overhunting
C. The climate change in the Ice Age
D. The reason for extinction uncovered
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科目：高中英語 來源： 題型：
Henry Bond was about ten years old when his father died. He lived 21 poor life with his mother. When in fourth grade,Henry wanted a grammar book in order to join a class in the school. 22 his mother didn't have money to buy one for him. Henry was very much troubled by it,and started thinking about 23 could be done.
One morning,it snowed 24 (heavy) and the cold wind blew hard. 25 (look) at the deep snow,Henry said to 26 (he) ，“It is an ill wind that blows nobody good."
He ran to the house of a neighbor,and offered his 27 (serve) to clear a path in front of his house. The offer was accepted. After 28 (complete) this work,he received a tip. Then he went to another place for the same purpose,and then to another,29 he earned enough to buy the book.
When school started,Henry was in his seat,the happiest boy in the class,ready to begin the lesson in his new book.
Henry was always one of the top students in his class. He knew no suòh word 30 “fail”. Having the will,he always found the way.
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科目：高中英語 來源： 題型：
2. —What should we do for the disabled children in the Children's Home?
—You,re supposed to a study group to help them.
A. take up B. fix up C. set up D. stay up
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