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【单选题】C Psychology is the study of the mind and mental activities. For example, psychologists are interested in why some things make you sad, but others make you happy. They want to know why s...
A.
the mind
B.
the sports ability
C.
the feelings
D.
the whole brain
【单选题】（ ）是相机取景器的作用。
A.
观察被摄景物的范围，选取合适的拍摄场面
B.
观察被摄景物的范围，选取合适的曝光时间
C.
观察被摄景物的形状质感，选取合适的拍摄场面
D.
观察被摄景物的范围，选取合适的拍摄场面