结核菌吸入人体后发生变态反应的时间是（）
A.1周
B.2周
C.3周
D.4～8周
E.9～12周
参考答案：D
—My dear, you ______ things about. Look, what a mess in the room!
—Sorry, Mom.
A．have always thrown
B．always throw
C．are always throwing
D．always threw
