题目

At the age of 35, Johnson Barnes injured(损伤) himself when skating during a winter vacation. His doctors said he could never walk again. But a new technology(科技), the robotic exoskeleton(外骨骼机械装置), brought Johnson and other people like him a surprise —— it can work like our arms, legs or hands out side our body. Now Johnson can ask the machine to take him to the places he wants to go to and help him reach the things he wants to get.Although the disable(残疾的) people still can’t do everything like a healthy man, the exoskeleton makes them believe they can do things生物体进行一切生命活动的基础是A.新陈代谢B.生长和发育C.遗传和变异D.应激性