题目

—Look at _________ sculpture, Jack! How do you like it?—This is ________ most wonderful one I have ever seen. A . the; a B . a; the C . the; the D . a; a 答案:C如图表示人体内某些生命活动的过程.请据图回答:(1)若[1]是小肠壁内膜,则[2]中的消化液括______.(2)若[1]是肾小囊壁,则A过程表示______.(3)若[1]是肺泡壁,则[3]处的氧与______结合,使血液呈现鲜红色.(4)若[4]是脑细胞,则c→D血液成分的变化是______.
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