She's leaving _________ Shanghai next week.[ ]
A. for
B. to
C. at
D. on
答案：A
Her sister is _____ years old. Her birthday is June _____ . [ ]
A. second; two
B. too; second
C. two; second
D. second; second
绿色开花植物根的组成、形态和结构都是相同的。[ ]
