Which of the following is an early sign of
题型：单项选择题
问题：
Which of the following is an early sign of laryngeal cancer
A. Difficulty swallowing.
B. Chronic foul breath.
C. Persistent mild hoarseness.
D. Nagging unproductive coug
题型：单项选择题
看图补全对话。
1. A: _ _____ you go yesterday?
B: I went to Nanjing.
A: _____ ____ you do?
2. A: you go to Beijing by train?
B: No, I didn't.
A: did you go there?
B: By _ .
3. A: _ do you feel?
B: I feel sick.
A: ?
B: I .