煤工尘肺患者弥散性肺气肿的X线胸片表现为（）。
A.圆形小阴影
B.大阴影
C.胸膜增厚
D.肺气肿
E.白圈黑点
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选词并用其适当形式填空。
2. Mum,what's for supper? I am _____. 3. Tony fell down from the motorbike and _____. 4. He spoke very _____ and we could easily understand him. 5. The dog can _____ the blind man across the street. 6. You must use _____ to go rock climbing. 7. He asked if there was a _____ near the village. 8. You'd better follow the teacher in the forest, or you may _____. 9. It is dangerous to_____ on your own in the jungle. 10. I'm an adult now. You don't need to _____ me. |
一块正方形菜园四周围了一圈篱笆，篱笆长72米，这个菜园的面积是多少？
— Hi, Lucy. Have you finished your homework yet?
— No, just a half. I am really bored with so much homework.
— _____ [ ]
A. So do I.
B. So am I.
C. So I do.
D. So I am.
细菌性咽、扁桃体炎最常见的致病菌是
A．溶血性链球菌
B．流感嗜血杆菌
C．肺炎链球菌
D．葡萄球菌
E．革兰阴性杆菌
粮食运输应遵循（）、（）、（）、（）的原则。