珙机属植物开花时，状如白鸽飞栖枝端，其白色部分是（）
A、树叶
B、花瓣
C、苞片
D、萼片
参考答案：C
I_________a dictionary, but my sister__________one. Her dictionary is there. [ ]
A. have, has
B. have, doesn't have
C. don't have, has
