一只失去雏鸟的美国红雀,总是给养鱼池边浮到水面张口求食的金鱼

一只失去雏鸟的美国红雀,总是给养鱼池边浮到水面张口求食的金鱼喂它捕来的昆虫,就像喂自己的雏鸟一样,一连喂了几个星期。下列有关这一事例的说法中,正确的是

①是先天性行为②是学习行为③是繁殖行为④是由遗传物质决定的⑤是由环境因素决定的

A.②③⑤   B.①③④   C.②③④   D.①③⑤

答案

B

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