阅读短文，从方框中选择适当的句子还原到短文中，使短文意思完整．
Scientists think that many or most animals can't see colors．【小题1】 ．To find out if dogs could see colors，scientists gave dogs food every time they played certain piece of music． 【小题2】 only when they heard this piece of music．They did not get ready to eat when they heard other pieces of music．
Then the scientists gave the dogs food every time they showed them a certain color．The dogs got ready to eat when they saw thi s color． 【小题3】 ．Again the dogs got ready to eat．The colors were al l the same to them． 【小题4】 ，however．For example if we put food in a red box and do this every day．A monkey wiIi always go to the red box to get the food． 【小题5】 if we then put food in a blue box．B
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(答案→)B
解析：这篇短文主要介绍了世界上大部分动物看不见颜色，并举了两个例子来说明这一问题。
【小题1】联系上文，科学家们认为许多或者大部分动物看不见颜色，可知选B，对于他们来说这是世界是黑白的。
【小题2】联系下文，只有当他们听到这首曲子时，可知选C，这些狗准备吃食。
【小题3】联系上文可知此处指的是科学家们换了另一种颜色的食物，故选A，然后科学家们给了这些狗另一种颜色的食物。
【小题4】联系下文，可知选E，颜色对于猴子来说并不都是一样。
【小题5】联系上下文描述，可知猴子能够区分颜色，故选D，如果我们把食物放进一个兰色的箱子，猴子不进去。