The policeman entered the dark room,______
A. gun was in hand B. had gun in hand
B. gun be hand
C. D. gun in hand
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调节X线管灯丝电流的目的是
A. 控制产生X线的性质
B. 控制产生X线的数量
C. 阻止反向电动势D．这些都对
D. 有一个以上对，但不都对
下列药物有毒的是
A. 血竭
B. 三棱
C. 干漆
D. 西红花
E. 莪术
斑蝥的内服用量是
A. 0.03～0.06克
B. 0.015～0.03克
C. 0.3～0.9克
D. 0.002～0.004克
E. 1～3克
Breakfast in the school canteen usually ______ egg, bread, and milk
A. consists of
B. is consisted of
C. makes up
D. is included
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