问题
选择题
在△ABC中，∠A，∠B，∠C所对的边分别为a，b，c，则正弦定理是指（ ）
|
答案
由正弦定理：
=a sinA
=b sinB
，c sinC
可知选项D正确．
故选D．
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在△ABC中，∠A，∠B，∠C所对的边分别为a，b，c，则正弦定理是指（ ）
|
由正弦定理：
=a sinA
=b sinB
，c sinC
可知选项D正确．
故选D．
| 阅读理解。 | |
Mary's Doughnuts (炸面圈) | |
| Mary said, " I want to make some chocolate-chip (巧克力薯片) doughnuts." She asked Bill, " Would (将要，愿意) you like to help me? " Bill said, " I want to play table tennis." " Then I'll do it myself, " said Mary. Later she asked Bill to help cook the doughnuts. Bill said, " I want to watch TV." So Mary said, " I'll do it myself." When (当……时候) Bill wanted to eat a doughnut, Mary said, " No, I'll eat them myself." | |
把下列单词填人相应的空格内。
2. I am busy now. ____________ you answer the phone for me? 3. — ____________ do you eat lunch? — At 12: 00. 4. She said, " I don't need help. I can do it ____________." | |
| 选择最佳答案。 | |
| 5. What did Mary think of Bill? | |
[ ] | |
| A. He was lazy. B. He was lucky. C. He was quiet. D. He was strong. | |
| 6. Who made the doughnuts? | |
[ ] | |
A. Bill. | |
| 7. In the end, ______________. | |
[ ] | |
| A. a dog iicked (舔) the doughnuts B. Mary gave Bill some doughnuts C. Mary ate them alone D. the doughnuts were not sweet |