在合法贸易中，下列哪种优化祖母绿无须声明：（）.
A.注无色油的
B.注有色油的
C.注塑料的
参考答案：A
He has a habit of keeping his arms _____ when talking to others, which I personally think _____ impolite
to his audience. [ ]
A. to be folded; it
B. being folded; X
C. folded; it
D. folded; X
商业秘密的价值性是指（）
A.社会价值
B.精神价值
C.经济价值
D.秘密价值
talking to others, which I personally think _____ impolite