题目内容

Photoshop中“背景层”始终在最上层。

A. 对
B. 错

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CMYK模式中共有()个单独的颜色通道。

A. 1
B. 2
C. 3
D. 4

Each key on the board is ________ a different type of function.

A. with
B. as
C. for
D. to

When he was in danger, nobody came to his ________.

A. help
B. assistance
C. assist
D. rescue

You need to place the carton of fries with the McDonald's name ________ the customer.

A. to face
B. facing
C. face
D. faced

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