忽略空气阻力，抛出后的小球在空中运动轨迹如图所示，抛出后的小球由于（  ）

北京的气候：____气候，春季干旱多风，夏季____，秋季晴爽宜人，冬季____。全年大部分降水集中于____季。

   Of all the things we eat and drink，water is the1important.The human body can go2 food for a long time，but two3three days without water could make people4.
   A lot of people don't understand how5water the human body needs6well and many people don't drink enough，esecially in7weather. Most people drink8they are thirsty but in fact they need more water，expecially when they take9.A man's body is 65 to 75 percent of10. If we don't have enough water. We fell tired and may become ill.