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举一反三
【单选题】标准烛光的温度为1930K，此时，摄像机拍出的影相偏，原因是（）
A.
红；色温越低，颜色越偏红
B.
红；色温越高，颜色越偏红
C.
蓝；色温越低，颜色越偏蓝
D.
蓝；色温越高，颜色越偏蓝
【单选题】Many people feel that human beings are responsible for the disappearance of some other animal species. While we may have hastened the disappearance of some, abundant evidence suggests mankind has had ...
A.
Human beings have hastened the disappearance of some.
B.
There was mass extinction long before humanity's time on Earth.
C.
Human beings'activities have had great impact on the earth.
D.
Many species have extinct since the human race came into being.