M: Well, they've got a lot of sentimental Value for me, but that's about it.
Q: What does the man mean?
(15)
A.He plans to sell the books to a collector.
B.The old books are worth a lot to collectors.
C.He won't sell the books until he has read them.
D.The books probably aren't worth much in terms of money.
第6题
佝偻病的最主要原因
A.缺钙
B.缺铁
C.缺乏维生素D
D.婴儿生长速度快
E.甲状旁腺功能不全
第7题
佝偻病的最主要病因是
A.缺铁
B.缺乏维生素D
C.甲状旁腺功能不全
D.缺钙
E.婴儿生长速度快
第8题
何谓维生素D缺乏性佝偻病
A.主要是缺钙
B.主要是缺磷
C.主要是碱性磷酸酶增高
D.主要缺乏维生素D3
E.主要缺乏维生素D,使钙磷代谢异常,骨钙化受阻
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