以下哪一种疾病，不会有血小板减少：（）
A.特发性血小板减少性紫癜
B.过敏性紫癜
C.感染性紫癜
D.急性再生障碍性贫血
E.播散性红斑狼疮
参考答案：B
把带芽的马铃薯块栽到土壤中，培育成新植株，这种生殖方式属于（ ）
A．出芽生殖
B．无性生殖
C．有性生殖
D．分裂生殖
69. We had to _______hundreds of people because all of the seats were sold.
A．turn away
B．turn down
C．turn against
D．turn about
