A-A+
When Cox-2 inhibitors were banned from sale _
问题详情
When Cox-2 inhibitors were banned from sale, ______.
A．no research had been done about their effects
B．some studies demonstrated their usefulness
C．their risks were not well known to the public
D．some patients complained about the decision此题为多项选择题。请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：文章表明，这些药物有防癌功效。第六段ted they had other anti．cancer properties as well，possibly reducing the risk of malignancies of a number of sites，including the lung and esophagus．
