题目

Sixty percent of the milk _________ horrible. A. tasted      B. taste        C. was tasted             D. were tasted 答案：A如图4所示，按照构成生物体的结构层次排序，正确的是            （  ）A.④→②→①→③→⑤             B.①→②→③→④→⑤C.⑤→①→③→④→②            D.②→①→④→③→⑤