天然状态下的洪积扇中,由山口向平原地下水的水化学作用由溶滤作用为主转化到以浓缩作用为主,矿化度由()到()。()
A、大到小
B、小到大
C、不变
D、以上都不正确
参考答案:A
— Did he break it accidentally?
— No, ________.
A.by mistake
B.by chance
C.on purpose
D.with purpose
How can you fight your cancer if you cannot look it______the face.
A.on
B.by
C.in
D.from