【单选题】成熟的红细胞主要以糖酵解供能的原因是( )
【简答题】When there are small children around, it is necessary toput the bottles of pills out of _____. A) reach B) hand C) hold D) place
【单选题】When there are small differences between the heights of two successive high tides or two successive low tides,the tides are called ().
【简答题】I was late yesterday (因为) the bad traffic.