下列有关哺乳动物角的说法不正确的是（）。A、洞角不分叉，终年_爱下问搜题

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问题单项选择题

下列有关哺乳动物角的说法不正确的是（）。

A、洞角不分叉，终年不更换

B、犀牛角是毛的特化产物

C、实角是真皮骨化的产物

D、长成后的鹿角可作为贵重的中药——鹿茸

E、长颈鹿的角同鹿角并不相同

答案

参考答案：D

单项选择题

下列哪些因素，不能让一个企业同时获得较高顾客认可价值和较低价格两种优势（）。

A.提供高质量产品的同时增加市场份额

B.高质量产品的累积经验降低成本的速度比低质量产品快

C.提高价格的同时降低产品质量

D.注重提高生产效率可以在高质量产品的生产过程中降低成本

填空题

way , everything, eat , listen, much, do , try, more , fruit , knowledge, always , read

Food is very important. Everyone needs to __1__ well if he or she wants to have a strong body(身体). Our brains (大脑) also need a kind of food. This kind of food is __2__. We begin to get knowledge (知识) When we are very young. Small children are interested in everything around them. They learn _3__ while (当) they are watching and _4__. When they are getting older, they begin to __5__ storybooks, anything they like. When they find something new, they like to ask questions and _6__ to find out the answer.
What is the best _7__ to get knowledge? If we _8__ by ourselves, we’ll get the most knowledge. If we’re __9__ getting answers from others and do not ask why, we will never learn well. When we study in a right way, we will learn _10__ and understand (理解) better.