The trains___ the travellers who want to go to other places. A. used to carry B. get used to carrry C. are used to carry D. are used to carrying 答案:C 解析: 本句填一个use的被动语态,后跟一个不定式作目的状语。16.图为甲、乙两种物质的溶解度曲线.下列说法正确的是( )A.甲物质的溶解度大于乙物质的溶解度B.将接近饱和的甲溶液变为饱和溶液,可采用蒸发溶剂或降温的方法C.t1℃时,甲、乙两种物质的饱和溶液中,溶质质量分数均为15%D.t1℃时,将两种饱和溶液升温至t2℃,所得溶液中溶质的质量分数都增大