生产经营的食品中不得添加()。
A.药品
B.中药材
C.化合剂
D.增白剂
参考答案:A
由"双轨制"向"分支型"学制演变是()的学制改革内容。
A.中国
B.美国
C.日本
D.英国
Many of his colleagues eventually agreed that Einstein's theory was tenable.
A.tenuous
B.warrantable
C.redundant
D.tolerable