题目

A direct order like “ Daisy, pass me the book” sounds rude. We’d better say: “_______”    A. Daisy, could you please pass me the book?    B. Daisy, I wonder if can you pass me the book.    C. Daisy, give me the book!    D. Daisy, I wonder you can pass me the book. 答案：A肾小球内流动的液体是( )。A.静脉血 B.原尿C.尿液 D.动脉血