Question

【题目】—What do you think of the pollution?
—______ it's serious, everyone can do something to save the world.
A.Unless
B.Although
C.However
D.Because

Answer 1

【答案】B
【解析】句意：—你怎么看待污染问题？—____很严重，但每个人都能做一些事来拯救世界。根据句意，前后两句话意思转折，用although，故选B。