感谢大家帮助。我是在CIC网上看了以下陈述才来求证的& @9 C- _8 \3 s7 _ f2 n
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If you leave Canada and want to return, you must have:3 b5 m; I4 V1 i9 z4 ?
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a valid passport or travel documents# g" y5 ^1 q" _3 E4 l1 T# c
a valid study permit if you are returning to study in Canada and7 A8 t* h5 V# n0 m
a valid temporary resident visa if you are a citizen of a designated country for which Canada requires a visa.. B/ U8 q# a# b' b9 y
If 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.