A-A+
Why don't we need as many teeth as our ancesto
问题详情
Why don"t we need as many teeth as our ancestors？
A．Because we have to deal with much food
B．Because we eat much softer food.
C．Because we eat tough gritty food.
D．Because our ancestors ate much softer food.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：本题答案直接从原文“Our ancestors ate tough gritty food. and so they needed many teeth. Our teeth, however, do not have to cope with such a diet, because we eat much softer food”中即可获得。
