问题
单项选择题 A1/A2型题
正常人平卧时，颈外静脉在锁骨上缘至下颌角间的充盈水平在（）
A.不显露
B.下2/3以内
C.下1/2以内
D.下1/3以内
E.以上都不对
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
正常人平卧时，颈外静脉在锁骨上缘至下颌角间的充盈水平在（）
A.不显露
B.下2/3以内
C.下1/2以内
D.下1/3以内
E.以上都不对
参考答案：B
| 根据句意，用所给动词的正确形式填空。 |
| 1. He usually goes to school by bus, but today he ________(walk) to school. 2. ________ you ________(have) any eggs for breakfast yesterday? 3. There ________(be) some bread in the box yesterday. 4. Sam ________(be) here half an hour ago. 5. — Where ________ you ________(meet) the famous actor? — I met him in Beijing. |