调配罂粟壳时不得单包，必须混入群药，防止变相套购。
参考答案：对
_____ is reported in the newspaper, talks between the two countries are making progress. [ ]
A. It
B. As
C. That
D. What
下述疾病可致云雾移睛，除了：
A．葡萄膜炎
B．视网膜炎
C．玻璃体退行性变
D．中浆
E．眼内出血
