1.F
根据前一句Many people might say that dogs are our best friends.(很多人可能会说狗是我们最好的朋友。)可知,空格处会进一步说明这种说法的原因。结合选项,F符合语境。
2.B
根据后面的描述There were different numbers of shapes in the pictures.The dogs were able to learn how to choose the picture that had more shapes, according to Time.图片中有不同数量的形状。据《时代周刊》报道,狗狗们能够学会如何选择有更多形状的图片。可推知,狗狗们会数数。结合选项,B符合语境。
3.D
根据该段最后一句Human babies take a long time to learn about how time passes.人类婴儿要花很长时间才能了解时间是如何流逝的。可知,这一段讲述的是狗狗也知道时间的流逝。结合选项,D符合语境。
4.A
根据后面的描述They jump up and down to show they are happy.他们上蹿下跳,表示他们很高兴。以及When they see that you are sad, they touch your hand with their nose.当他们看到你难过的时候,他们会用鼻子去摸你的手。可知,狗狗也有感受。结合选项,A项符合语境。
5.G
根据前一句Before you keep a dog at your house, take it to an animal hospital and get it vaccinated.在你养狗之前,带它去动物医院,给它注射疫苗。以及后一句It will bring you great joy.它会给你带来巨大的快乐。可推测,空格处表示要照顾好狗狗。结合选项,故选G。