问题
名词解释
下咽骨
答案
参考答案：
硬骨鱼类第五对鳃弓的角鳃骨特别扩大，形成一对大的骨块，称为下咽骨。鲤科鱼类最发达。
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下咽骨
参考答案：
硬骨鱼类第五对鳃弓的角鳃骨特别扩大，形成一对大的骨块，称为下咽骨。鲤科鱼类最发达。
| 阅读理解。 | |||||||||||||||||||||||||||
| Travel Arrangements Date:15 April 2011 For :Wang Mei
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| 1. How many days will Wang Mei's holiday last? | |||||||||||||||||||||||||||
| A. 14. B. 16. C. 19. D. 20. | |||||||||||||||||||||||||||
| 2. At what time does Wang Mei have to be at the airport for her flight from Beijing? | |||||||||||||||||||||||||||
| A. 8:00 a. m. B. 9:30 a. m. C. 10:00 a. m. D. 11:00 a. m. | |||||||||||||||||||||||||||
| 3. When she arrives in Perth, Wang Mei will travel from the airport . | |||||||||||||||||||||||||||
| A. by taxi B. in a car C. on the travel-bus D. with her host family | |||||||||||||||||||||||||||
| 4. Where will Wang Mei be on May 16? | |||||||||||||||||||||||||||
| A. In a hotel in Perth. . B. On her return to Sydney. C. On a flight to Singapore. D. On a trip to Monkey Mia. | |||||||||||||||||||||||||||
| 5. In which country will Wang Mei stay before she returns to Beijing? | |||||||||||||||||||||||||||
| A. Perth. B. Sydney. C. Singapore. D. Monkey Mia. |