50) In dealing with a challenge on such a scale, it is no exaggeration to say “Unity we stand, divided we fall” -- and if I had to choose a slogan it would be “Unity in our diversity.”
【简答题】阅读理解。 No one likes germs. You wash your hands often and avoid sick people. But some of the germiest places are in your own home where you can't avoid them! Over 77, 500 bacteria per square centimeter ...