单项选择题

软光在室外一般是指阳光透过云层，或被地面、墙面等反射后的光线。
A、正确
B、错误

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If you're not getting enough sleep each and every night, more of theAlzheimer's-related protein will build up. (from Watching for Speaking of U5)

答案：正确

单项选择题

竹为东方传统插花花材，不可在现代花艺中使用。
A、正确
B、错误