I gotta tell you, that all depends on which college do you want to enter? I mean the colleges or universities in the U。S。
   or

in the Britain。

If u wanna enter an American university or college, there is

no a better way than takin' the TOFEL。
   And if u wanna enter a British university or college, u'd better take the "雅思" exam。

The GRE exam is recongnized and identified in both in U。
  S。A。 and Britain。

考美国的研究生,考GRE和TOEFL

考英联邦的本科和研究生,考IELTS

去美国考托福gre 去英国澳大利亚考雅斯

雅思，中国人倒数第一。

托福，中国人亚洲第四。