小儿原发性肺结核原发病灶最常见的转归是()
A.钙化
B.血行播散
C.产生空洞
D.干酪样变
E.支气管淋巴结周围炎
参考答案:A
—Are there any discounts?
—No, but anyone who buys this breakfast food gets a ________ gift of a fine greeting card. [ ]
A. expensive
B. cheap
C. free
D. paid
化学沉积分异的大致次序是氧化物→硅酸盐→碳酸盐→()。