区别癌性胸腔积液与良性胸腔积液下列项目中最有价值的是
A．外观诊断
B．比重
C．蛋白定性
D．细胞计数及分类
E．胸腔积液癌胚抗原测定
参考答案：E
读句子，选出正确的答语。
1. Hello. My name is Li Nan.[ ]
A. Hello. I live in Beijing.
B. Hello. My name is Lu Zheng.
2. Hello. Nice to meet you.[ ]
A. How are you?
B. Hello. Nice to meet you, too.
3. May I have one marker, please?[ ]
A. Here you are.
B. There it is.
4. Good-bye, see you later![ ]
B. Good-bye.
诗中湘君对湘夫人的思念之情大致有几个层次？
