回复：so 9 letters in total? thanks.

来源: mytwins 于 2006-10-05 09:36:08 [] [旧帖] [给我悄悄话] 阅读数 : (238 bytes)
回答: 回复：回复：I-140 approved 由 mytwins 于 2006-10-05 09:13:04

4 from current university, 5 from other institutes including 2 from outside US. 3 are independent. I will advice the more the better, but obviously no need to be more than 10. If your background is very strong, I heard 3 or 4 are enough.

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