人体的呼吸系统是由____和____组成的.
以下对绿色植物的描述正确的是( )
⑴____A. always B. often C. fruit
⑵____A. vegetable B. first C.fruit
⑶____A. eight B.three C.first
⑷____A. his B. your C.I
⑸____A. drink B.sport C. eat
Many disabled children are ______ need of help. We should try our best to help them.