单元过关训练（Unit2）第一题答案
| 1 | 2 | 3 | 4 | 5 |
| C | B | B | A | D |
| 6 | 7 | 8 | 9 | 10 |
| C | A | D | B | C |
| 11 | 12 | 13 | 14 | 15 |
| B | B | B | B | C |
单元过关训练（Unit2）第二题答案
| 16 | 17 | 18 | 19 | 20 |
| B | A | C | B | D |
| 21 | 22 | 23 | 24 | 25 |
| B | A | A | A | C |
单元过关训练（Unit2）第三题答案
| 26 | 27 | 28 | 29 | 30 |
| T | F | F | T | F |
31、There are six.
32、 Group 1.
33、 Yes，l tbink so.
34、 No，it isn't.
35、 Eat foods from all groups.
／Eat a well-balanced diet.
单元过关训练（Unit2）第四题答案
| 36 | 37 | 38 | 39 | 40 |
| ever | exercise | writer | dentist | program |
单元过关训练（Unit2）第五题答案
| 41 | 42 | 43 | 44 | 45 |
| went | difference | doesn’t have | （to）learn | to listen |
| 46 | 47 | 48 | 49 | 50 |
| to drink | twice | to write | watches | shopping |
单元过关训练（Unit2）第六题答案
| 51 | 52 | 53 | 54 | 55 |
| F | E | D | C | B |
单元过关训练（Unit2）第七题答案
One possible version：
There are fifty students in Mr，Smith’s class， Here are the results of the students activity survey sixty percent students watch TV every day，I'wenty percent students watch TV twice a week， Some students four times a week， Five of them have sports every day，Ten of them have sports twice a week， Thirty-five students have sports four times a week， All of the students do their ho： rnework every day， No students don't do their homework. All of them work hard at their lessons.
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