问题
判断题
渐开线上各点的齿形角不相等，基圆上的齿形角最小，等于零。
答案
参考答案：对
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渐开线上各点的齿形角不相等，基圆上的齿形角最小，等于零。
参考答案：对
| 阅读理解 | |
| Mike is 15 years old and lose is 13 years old. One day they went to see the doctor. Because they had bad colds and coughed terribly. After checking, the doctor gave them two bottles of medicine to take. There are the words on the mark of the bottles:
| |
| 根据短文内容，选择最佳答案。 | |
| 1. Rose should take a day. Mike should take a day. | |
| A. 1 teaspoonful; 2 teaspoonfuls B. 2 teaspoonfuls; 1 teaspoonful C. 3 teaspoonfuls; 6 teaspoonfuls D. 4 teaspoonfuls; 2 teaspoonfuls | |
| 2. The medicine should be kept in | |
| A. the sun B. any place C. hot water D. a fridge | |
| 3. Rose should before she takes some. | |
| A. shake the medicine well B. eat nothing C. not shake the medicine D. drink something | |
| 4. People aged can not take this medicine. | |
| A. 2 B. 25 C. 13 D. 15 | |
| 5. The medicine left should be after December, 2011. | |
| A. eaten in a month B. throw away C. kept in a cold place D. kept in a warm place |