慢性淋巴细胞性白血病脾主要累及部位是()
A．脾小动脉
B．脾门
C．脾包膜
D．白髓
E．髓索
参考答案：D
With so much work unfinished, he realized that a picnic out this weekend was completely _________
A out of question B out of the question C out of order Dout of date
危害瓜类蔬菜的害虫主要有（）、（）等。
