连词成句，注意汉语提示、标点符号和字母大小写。
1. long, has, hair, she (她长着长发。)
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2. a, is, teacher, he (他是一位教师。)
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3. friend, tall, is, best, thin, my, and (我最好的朋友又高又瘦。)
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4. boy, likes, computer, the, games (这个男孩喜欢电脑游戏。)
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5. girl, this, a, is, student (这个女孩是学生。)
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6. a, have, I, friend, good (我有一个好朋友。)
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7. is, teacher, who, English, your (谁是你的英语老师？)
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8. me, the, let, floor, sweep (让我来扫地。)
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9. this, his, photo, is (这是他的照片。)
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10. schoolbag, heavy, your, is (你的书包很沉。)
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在核磁共振氢谱中能出现两个峰，且其峰面积之比为3：1