下列哪些疾病的胸片可出现块影：（）
A.肺结核
B.肺癌
C.结核性胸膜炎
D.肺脓肿
E.支气管扩张症
参考答案：A, B, D
句型转换。
1. The bus is crowded, ? (完成反意疑问句）
2. Have they been ready?（作肯定回答）
.
3. They were so tired that they couldn't walk anylonger.（改为同义句）
They were _ tired _ walk anylonger.
4. They spent five years building the building.（改为同义句）
It them five years to the building.
5. He left after the bus came to the stop.（改为同义句）
He _ leave the bus came to the stop.
慢性进行性头痛伴呕吐、视 * * 水肿提示（）
A.脑血栓形成
B.颅骨骨折
C.偏头痛
D.颅内占位性病变
E.三叉神经痛
