1.A
2.B
3.C there is data：数据表明.常用搭配
4.C
5.A
6.D primary grades：小学低年级（1-3年级）.elementary school：小学.
7.B
8.C
9.A
10.A These two brothers are very like.The two brothers look very much alike
11.A 注意后面的介词：estimate for,assessment of
12.B
13.D
14.A
15.B
16.C
17.C
18.C
19.B
20.A
ABCCA DBCAA ABDAB CCCBA
呵呵,大家意见很不统一啊.
楼上的,95%?