Whenever the teacher was not here,the children       make a lot of noise.

A．will

B．would

C．were to

D．were going to

有关浸润性肺结核的描述正确的是

A．痰菌一定阳性
B．易并发成人结核性胸膜炎
C．易形成空洞和支气管散播
D．易引起血行播散
E．是结核菌侵入血循环引起