— I think _______ can keep us healthy.
— I agree with you.
A:do exercise
B:exercising
C:exercised
我国目前正在全面建设小康社会。对全面建设小康社会理解不正确的是( )
下列哪种通信是以“光”为载体传播的( )
环境问题是指人类不合理地开发利用资源所造成的环境污染与破坏。( )
Food is very important to our health. Everyone needs to eat well if he or she wants to have a strong body.Our minds, like our bodies, always need the best food. This kind of food is knowledge. We start getting knowledge when we are very young.
有关下列几种动物的叙述,错误的是( )