问题
单项选择题
维生素A缺乏病最早出现的临床表现是（）。
A.身体发育障碍
B.角膜软化
C.色盲
D.暗适应迟缓
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
维生素A缺乏病最早出现的临床表现是（）。
A.身体发育障碍
B.角膜软化
C.色盲
D.暗适应迟缓
参考答案：D
补全对话阅读对话，从每题A. B. C.D四个选项中，选出一个最佳答案完成对话。（5分） A: Hi, Lin Tao! Could you tell me something about your new pen pal? B: His name is Richard. He is from Canada. But he is living with his parents in Han~hou now A: Uh-huh. B：He's 15 years old. A: B: Oh, he speaks English and French, and he is leaming Chinese now. A: Really? Many foreigners think Chinese is hard to learn. B: Yes, he does. But he works very hard at it.He has invited me to take a vacation in Hangzhou and he can leam Chinese from me by the time. A: B: Yes,I have.I will leave next week.
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