一般义齿基托树脂的线性收缩为
A．2%
B．小于0.2%
C．7%
D．0.2%～0.5%
E．大于0.5%
参考答案：D
They have never been to New York,__________? [ ]
A. have they
B. haven't they
C. don't they
D. do they
关于阿托品作用的叙述，正确的是
A．扩瞳、升高眼内压和调节麻痹B．扩瞳、降低眼内压和调节麻痹C．扩瞳、升高眼内压和调节痉挛D．缩瞳、降低眼内压和调节痉挛E．缩瞳、升高眼内压和调节痉挛
