生物化石可能出现在( )中。
A.(A) 沉积岩、变质岩、岩浆岩
B.(B) 沉积岩、变质岩
C.(C) 沉积岩
D.(D) 岩浆岩、变质岩
参考答案:B
She has a pen in one of her hands, but what's that in ______ hand? [ ]
A. another
B. the other
C. other
D. the others
可作乳剂型气雾剂乳化剂的是
A.聚山梨酯80B.胶态二氧化硅C.氟里昂D.CO2压缩气体E.丙二醇