单项选择题
Traditionally, the sonnet is a fourteen-line poem writt...
单项选择题Traditionally, the sonnet is a fourteen-line poem written in iambic pentameter. A、正确 B、错误
单纯扩散、易化扩散和主动运输的共同特点是（ ）A.要消耗能量B.顺浓度梯度C.需膜蛋白帮助D.被转运物都是小...
单项选择题单纯扩散、易化扩散和主动运输的共同特点是（ ）
A bill of exchange must be in writing or an oral order.
判断题A bill of exchange must be in writing or an oral order.
