重症肌无力最常见的发病年龄组为()
A.新生儿
B.10岁以前
C.20~40岁
D.50~60岁
E.70多以上
参考答案:C
—What does your friend look like?
— .
A .He is tall. B. She is a kind girl.
C .She likes music. D She has good looking.
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