题目

如图表示渗透作用装置图，其中半透膜为膀胱膜蔗糖分子不能通过，水分子可以自由通过）。图中溶液A、B、a、b均为蔗糖溶液，其浓度分别用MA、MB、Ma、Mb表示，且MA＞MB，Ma=Mb＞MA。一段时间达到平衡后，甲装置、乙装置液面上升的高度分别为h1、h2，a、b的浓度分别为M1、M2，则    (      ) A.h1＞h2，M1＜M2        B.h1＜h2，M1=M2 C.h1＞h2，M1＞M2        D.h1＜h2，M1＞M2短文改错Dear editor，I’m sorry to occupy your precious time，and I really want to tell you anything about the problem of some people keeping too many pets nowadays．I take the problem more and more seriously for the following reason．First of all，as it is known to people，pets make loud noise that trouble residents a lot．What’s more，it is widely accepted that animal waste pollutes the environment，where makes people quite uncomfortable．Many owners like taking their pets to public place where they may frighten children or even bite people．The mostly important is that pets can spread some diseases and this has attracted much attention．Take all these factors into consideration，I sincerely hope that I can get help from you and expect the media do something for this．Yours truly，Wang Lin