问题
问答题 简答题
论述立式钢琴背柱的作用。
答案
参考答案：
⑴立式钢琴背柱的结构。⑵背柱的选材。⑶背柱的作用。
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论述立式钢琴背柱的作用。
参考答案：
⑴立式钢琴背柱的结构。⑵背柱的选材。⑶背柱的作用。
| 选择合适的句子补全对话。 | |
| (T- teacher; B- Bill; J- Jennifer; V- Victor) T: I want some students for the school concert. What can you do, Bill? __1__ B: No, I can't. But I can play the guitar. T: You can play the guitar! Good. OK, __2__ J: I can sing and __3__ T: You can! Great, Jennifer. __4__ J: No, I can't. Victor can play the piano. T: Victor, can you play the piano? V: Yeah, I can't sing or dance, __5__
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