Question

【题目】—Scientists all over the world are ______ new drugs to treat cancer．
—It will help many sick people．
A.increasing
B.rising
C.developing

Answer 1

【答案】C
【解析】句意：——全世界的科学家正在……新药治疗癌症。——这会帮助很多病人。A.增加； B.升起； C.发展，研发，故选C。