According to Mr. Roper’s survey, radio ranks third among the major forms of mass media in terms of popularity. ()
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感光材料的乳剂层是由()组成的。
A. 卤化银+明胶
B. 卤化银+明胶+补加剂
C. 明胶
D. 氯化银+明胶
Priestly doesn’t like Lamb’s letters. ()
In New York, and in a couple of other cities in the U.S., the newspapers have ceased to play a significant role as a medium. ()
Code-mixing refers to the fact that a speaker changes from one language to the other in different situations or when talking about different topics. ()