左冠状动脉回旋支阻塞引起的心肌梗死最可能是（）
A.前间壁
B.下侧壁
C.高侧壁
D.后间壁
E.前壁
参考答案：C
单句改错。
( ) 1. Would you like any mooncakes? No，thanks.
A B C D
( ) 2. We have a lots of homework to do every day.
( ) 3. Simon likes chocolates eggs very much.
( ) 4. Christmas is on December 25th on winter.
( ) 5. People give children sweets with a treat.
固定活塞取土器是( )。
A．由一个活塞和两套管子组成，取土质量较差
B．由一个活塞和两套管子组成，取土质量较好
C．由两个活塞和一套管子组成，取土质量较差
D．由两个活塞和两套管子组成，取土质量较差
