【简答题】The reason why Emery, who was already in his sixties, chased and caught a young man was that______.
【单选题】在平面解析几何中,当动点到一个定点的距离与它到一条定直线(定点不在定直线上)的距离之比是常数时,该动点的轨迹为圆锥曲线。常数的值不同,圆锥曲线的形状就不同。当常数小于1时,轨迹是椭圆;当常数等于1时,轨迹是抛物线;当常数大于1时,轨迹是双曲线。上述结论说明()①共性寓于个性中②矛盾的同一性推动事物的发展③事物的量变引起质变④事物的联系是具体的,多变的
【单选题】在平面解析几何中,当动点到一个定点的距离与它到一条定直线(定点不在定直线上)的距离之比是常数时,该动点的轨迹为圆锥曲线。常数的值不同,圆锥曲线的形状就不同,当常数小于1时,轨迹是椭圆;当常数等于1时,轨迹是抛物线;当常数大于1时,轨迹是双曲线。上述结论表明() ①共性寓于个性之中 ②矛盾的同一性推动事物的变化 ③事物的量变引起质变 ④事物的联系是具体的,多变的
【简答题】阅读理解。 One day an old man is selling a big elephant. A young man comes to the elephant and begins to look at it slowly. The old man goes up to him and says in his ear, ' Don't say anything about the el...
【简答题】Fill in the blanks with the expressions given below. Change the form where necessary. Each expression can be used only once. (prepare for be bound to stand up for in favor o...
【简答题】Directions: Read the following text. Choose the best word(s) for each numbered blank and mark A,B,C or D on the ANSWER SHEET. (10 points) In Cambodia, the choice of a spouse is a complex one for the y...
【单选题】中原地区是华夏文明的发祥地, ( ) 也是中国哲学、中国文化的摇篮。