可以鉴别再生障碍性贫血和急性粒细胞白血病的是()
A.周围血中白细胞减少
B.周围血中粒细胞减少
C.周围血中红细胞减少
D.周围血中血小板减少
E.周围血中有原始细胞
参考答案:E
We've tested three hundred types of boots, none of______is completely waterproof.
A.which
B.that
C.what
D.them
batch(批次)