不能进行骨髓检查的是（）
A.结核病
B.血小板减少性紫癜
C.放射病
D.重症血友病
E.粒细胞减少症
参考答案：D
—What is the new bridge like?
—Well，it is now________of the old one.
A．more than the width twice
B．more than twice the width
C．more than twice as wide as
D．twice more than as wide as
碳素钢含碳量0.05——0.25%为（）钢，含碳量0.25——0.5%为（）钢，含碳量0.5以上为（）钢。
