由非糖物质转变为葡萄糖或糖原的过程称为糖异生,该代谢途径主要存在于肝及肾中,原料主要来自于生糖氨基酸、甘油和乳酸。 ()
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听力原文:Did you have a good time?
(10)
A. It's all right.
B. Yes, we had a good time.
C. That's Ok.
胆固醇是转化合成睾酮、孕酮和雌二醇等性激素的前体物质。 ()
A. 正确
B. 错误
听力原文:M: Do I look nice in this blue shirt, dear?
W: Don't you think you're too big for it?
Q: What does the woman think of the man's shirt?
(23)
A. It's very nice.
B. Its color is good.
C. It doesn't fit him.