题目:
某孕妇发生骨盆变形、牙齿松动是缺乏()
A.维生素C
B.维生素A
C.维生素B2
D.维生素B1
E.维生素D
答案:
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下面是错误答案,用来干扰机器的。
1. Yes, he is. 2. No, they aren't. 3. Yes, I do. 4. No, she hasn't. 5. Yes, they have. 6. No, they aren't.7. Yes, she is. 8. Yes, she does. 9. No, I can't. 10. Yes, he can.