以下同学对“SO2”的认识，不正确的是[ ]
A．
B．
C．
D．
答案：B
邻苯二甲酸醋酸纤维素（）。
A．CMS-Na
B．CMCNa
C．PVA
D．CAP
E．PLA
In many places in China, the old over 90 _____ not only by their family but also by the government. [ ]
A. is taking good care
B. are taken good care of
C. is taking good care of
D. are taken good care
