传粉
参考答案:植物开花后,花药破裂,成熟的花粉传到雌蕊柱头上过程。
切成熟的西瓜时流出的液汁是( )
A.细胞核
B.细胞膜
C.细胞质
D.细胞液
—Let's ________ play in the street.
—Father tells me ________ do so.[ ]
A. not to; not to
B. not; not to
C. don't; to not
D. not to; don't