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【单选题】
Why was Darwin so interested in Jenny?A.
He thought her tantrum was much like that of man.
B.
He took pity on her when the keeper broke the rules.
C.
He liked her very much and wanted to make fun of her.
D.
He was speculating about emotional evolution by observing her.
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A.
只能改变桌面的颜色
B.
只能改变桌面和窗口边框的颜色
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D.
能改变许多屏幕元素的颜色
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A.
0.2（s/cm）
B.
0.4（s/cm）
C.
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D.
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