专家建议青少年要多吃奶、蛋、鱼、肉等含蛋白质丰富的食品．主要是因为蛋白质是

题干

专家建议青少年要多吃奶、蛋、鱼、肉等含蛋白质丰富的食品．主要是因为蛋白质是（）

A：容易消化的物质

B：主要供能物质

C：容易吸收的物质

D：人体生长发育必需的物质

上一题下一题 0.0难度选择题更新时间:2016-06-22 04:45:35

D

请从右栏中为左栏的图片选择相应的文字描述

Picture	Description(描述)
① ____	A. Aren't they lovely? They walk on the ice and snow. They can also swim. Do you want to know more about them?
② ____	B. Do you often watch him play basketball? If you do so, what do you think of him? Good or awesome（令人敬畏的）?
③ ____	C. — I can't find my keys. — Let me help you.
④ ____	D. — Where's your pen friend from? — Sydney. Oh, it's in Australia.
⑤ ____	E. Do you enjoy playing soccer? Look! They often play after school. How excited they are!