2008年北京奥运会会徽徽宝“中国印”采用的玉石出自（）。
A、新疆且末
B、新疆和田
C、新疆玛纳斯
参考答案：B
Plastic bags and boxes________ "white pollution" are attracting more and more people's attention. [ ]
A. are known as
B. are known for
C. known as
D. known for
骨软骨瘤典型X线特征是（）
A.瘤体可随骨骺生长而移至骨干
B.背向关节生长的骨性突起
C.瘤体与载瘤骨相连续
D.瘤帽不规则钙化
E.以上都是
