将盛有沥青试样的比重瓶放入烘箱中时要尽量防止（）的挥发。
参考答案：轻组分
径赛运动员作高抬腿跑和小步跑练习主要是为了提高 ( )
A．速度
B．最大力量
C．耐力
D．灵敏
“We have faith with people” means “we should ____ people, our families, our teachers, our friends and our teachers.”
A．believe
B．believe in
C．fight for
D．fight against
