肺心病肺部原发病常见表现是（）.
A.肺动脉瓣区第二心音亢进
B.右心室肥大
C.右心房肥大
D.长期慢性咳嗽
E.剑突下心尖搏动
参考答案：D
根据句意，用所给词的适当形式填空。
1. They received lots of ________ (compliment) on their wonderful performance.
2. He ________ (stick) his fork into a big piece of meat.
3. Thanks for ________ (invite) me to your birthday party.
4. I'm ________ (familiar) with the city, because it was my first time there.
5. In ________ (west) countries, people don't usually share the same dishes.
和药物之间并没有本质的区别，仅存在量上的差异的物质为（）
A.药物
B.毒物
C.水产药物
D.抗生素
