正常肌张力分类为（）
A.1种
B.2种
C.3种
D.4种
E.5种
参考答案：C
into many languages, Harry Potter is popular with children and adults as well all over the world.
A．Being translated.
B．Having translated
C．To be translated.
D．Having been translated
A．50Ω
B．100Ω
C．200Ω
D．400Ω
