【单选题】听力原文:W: Exercise, exercise, exercise! We hear so much about it these days. Yet even the experts can't agree on which exercises are best. Now some doctors are strongly encouraging arm exercises. M: Arm...
【简答题】Unless we spend money to spot and prasteroids( 小行星 )now , one might crash into Earth anddestroy life as we know it , say some scientists. Asteroids are biggerversions of the meteoroids( 流星 )tha...
【简答题】第 8篇 We eat food with the help of hands every day. It is possible for some germs (细菌) to get into our bodies. So it is important to know how to wash hands in the right way. A piece of news from CCTV s...
【简答题】Unless we spend money to spot and prasteroids( 小行星 )now , one might crash into Earth anddestroy life as we know it , say some scientists. Asteroids are biggerversions of the meteoroids( 流星 )tha...