题目内容

Ahyperbola(双曲线)wjthvertices(顶点)（-2，5）and(-2,-3),has an asynptote(渐近线)that passes the point(2.5) Then an equarionk of the hyperbola is

A．	B．
C．	D．

略

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A semipro baseball league has teams with 21 players each. League rules state that a player must be paid at least ＄15，000，and that the total of all players’ salaries for each team cannot exceed ＄700，000. What is the maximum possible salary，in dollars，for a single player？

A. 270，000 B. 385，000 C. 400，000 D. 430，000 E.700，000

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钓鱼岛(The Diaoyu Islands)自古就是我国固有领土，它的位置距温州市约356km、福州市约385 km、基隆市约190 km。若我国某海监船为维护我国对钓鱼岛主权，从温州出发去钓鱼岛巡航，到达钓鱼岛时航行了480 km。则下列说法中不正确的是（）

A．该海监船位移的大小是480 km，路程356 km

B．该海监船位移的大小是356 km，路程480 km

C．该海监船在海上航行时，确定其位置时可以将该海监船看成质点

D．若知道此次航行时间可求出此次航行的近似平均速度

After the accident, she had _____ all over.

A. pains B. pain C. ache D. aches

His father looks young, but _____ fact he is _____.

A. in; in the forties B. in; in his forties

C. in the; in the forties D. in; in his forty