问题
单项选择题
脊柱裂是胚胎发育过程中哪一部分发育障碍所致
A．内胚层
B．神经沟
C．神经板
D．中胚层
E．外胚层
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
脊柱裂是胚胎发育过程中哪一部分发育障碍所致
A．内胚层
B．神经沟
C．神经板
D．中胚层
E．外胚层
参考答案：D
| 阅读理解。 | ||
| Today is Sunday, December 2nd, everyone in Sheep Village (羊村) is very busy. What does he/she do? | ||
| ||
| ||
| ||
| ||
| ||
| 1. Nuan Yangyang writes to a friend at ______. | ||
| A. 3:10 am B. 10:16 am C. 11:30 am D. 1:00 pm | ||
| 2. ______ goes to a clothes store in the morning. | ||
| A. Mei Yangyang B. Lan Yangyang C. Fei Yangyang D. Xi Yangyang | ||
| 3. Fei Yangyang may be ______ at 3:50 pm. | ||
| A. at school B. in a sports club C. on the bus D. at home | ||
| 4. Xi Yangyang can ______ very well. | ||
| A. sing B. dance C. swim D. speak English | ||
| 5. Which of the following sentences is RIGHT? | ||
| A. Nuan Yangyang doesn't do homework on Sunday afternoon. B. Lan Yangyang eats lunch at home on December 2nd. C. Mei Yangyang has a nice skirt. D. There are no kids in the English club. |
