扁平颗粒胶片的感光材料为()
A.AgCI
B.AgBr
C.Agl
D.AgF
E.AgBr+Agl
参考答案:B
______ number of visitors were shocked by _____ number of the butterflies(蝴蝶) around the huge tree.
A.A; a
B.The; the
C.The; a
D.A; the
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