感谢大家帮助。我是在CIC网上看了以下陈述才来求证的 T1 T8 H4 ]: E$ a" x% q
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If you leave Canada and want to return, you must have: W' J. r [7 ^5 Q. _4 S% s8 b9 w* A$ {! i
a valid passport or travel documents+ ~' ^& Z- F8 u: u
a valid study permit if you are returning to study in Canada and6 B7 L3 Y+ w8 }$ ]: k
a valid temporary resident visa if you are a citizen of a designated country for which Canada requires a visa. : f. s6 e* A ?' v- SIf you are a citizen of a designated country and you travel to a country other than the United States, Greenland or Saint-Pierre et Miquelon, you will need a multiple-entry visa to re-enter Canada. If your temporary resident visa has expired or if your visa was only valid for a single entry, you must re-apply for a temporary resident visa at a Canadian visa office outside Canada before you can re-enter Canada.
I remembered I saw this policy somewhere before... 9 m7 M5 \2 \ Q7 D# M$ D4 u2 U. W) W0 E. N, y6 W* Q' [% H b5 I* b
Maybe someone can call CIC 1888-242-2100 for confirmation.