简答题
初级
2014-03-20
(22)__________
参考答案
暂无
答案解析
50。由“Cycling in German cities has increased bv 50 percent since l972.”可知自1972年以来,在德国市区使用是自行车的人数已增加50%.
你可能感兴趣的试题
A.Want something to eat.
B.Want something to drink.
C.All the lights gone out.