【单选题】What do you think should _____ the shopping list?
【单选题】Since the world heritage list was first created in 1972, many more sites _____ it. [ ]
【单选题】活性污泥法有多种类型,国内以( )居多。
【单选题】If you have figured out something, have you (a) added numbers together, or (b) understood it?
A.
(a) added numbers together
【单选题】听力原文: Do you know what Prince Charles, Seve Ballesteros and Elizabeth Taylor have in common? They all suffer from chronic back pain. In fact, bad back is one of the most common health problems today, ...
C.
Healthcare for people in all walks of life.