题目

I’ve worked with children before,so I know what______in my new job. A.expected     B.to expect    C.to be expected    D.expects 答案：B建立细胞学说的两位主要科学家是                                A．虎克和比夏       B．施旺和施莱登     C．施莱登和耐格里   D．施旺和列文虎克