石油钻井工所选择的工作鞋应具备（）。
A.防砸、防水、防电
B.防水、防油、防电
C.防水、防油、防砸
D.耐酸碱、抗高温
参考答案：C
Lucy liked all the dresses there, but she took the ______one to save as much money as possible for
Project Hope. [ ]
A. cheaper
B. more expensive
C. cheapest
D. most expensive
手术切除机会最大的肺癌是（）
A.鳞状上皮癌
B.未分化癌
C.腺癌
D.肺泡细胞癌
E.类癌
