问题
单项选择题
龙门架既可以直立，也允许倾斜安装，但前后倾角一般应限制在（）以内。
A.5°；
B.10°；
C.15°；
D.20°。
答案
参考答案：B
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龙门架既可以直立，也允许倾斜安装，但前后倾角一般应限制在（）以内。
A.5°；
B.10°；
C.15°；
D.20°。
参考答案：B
| 补全对话 | |
Tom: Oh,it looks like a bird. Mary: 1 You know no bird is so big and colourful. 2 Tom: Er... Why not go and have a look? Mary: 3 Tom: You're right Mary. 4 How beautiful it is! Mary: Yes. Whoes kite is it, do you think? Tom: It may be Jim's. He told l11e his kite flew a way this morning. Mary: 5 Tom: Oh. Let's go and bring it back to him. Mary: I agree. He-must be very happy. | |
| 1. _____ 2. _____ 3. _____ 4. _____ 5. _____ |