问题
单项选择题 A1型题
使用宫缩剂不当可引起（）
A.胎盘粘连
B.胎盘嵌顿
C.胎盘残留
D.胎盘植入
E.胎盘剥离不全
答案
参考答案：B
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使用宫缩剂不当可引起（）
A.胎盘粘连
B.胎盘嵌顿
C.胎盘残留
D.胎盘植入
E.胎盘剥离不全
参考答案：B
| 阅读理解。 | |
of bike with a very large wheel in the front and a small one in the rear (后面). The modern bike with two wheels of the same size was invented. But riding on such a bike was quite uncomfortable as the tyres were made of solid rubber (固体橡胶). Later, a clever man discovered the use of air filled tyres and this helped to make the bike what it is today. In China, many people choose to use bikes for their journeys. But few people have used bikes for long distant (远的) travelling (旅行，游历). 根据短文内容，判断句子正(T)误(F)。 ( ) 1. The bike is very useful to people. ( ) 2. The bike was heavy and dangerous some years ago. ( ) 3. The two wheels of modern bikes were the same size. ( ) 4. In China many people choose bikes for journey and long distant travelling. |