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1.Sunglasses are B
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2.英译汉:rimless polarized sunglasses
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3.sunglasses 'sʌnglɑ:siz]
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4.Parents should take seriously their children’s requests for sunglasses _____ eye protection is necessary
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5.4 b different b b types b b of b b computers b with b their b functions
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6.A={{a,{b}},c,{c},{a,b}},B={{a,b},c,{b}}求 AÈB,AÇB,A-B,AÅB
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7.estas son las b diferencias b b entre b el b agua b b carbonatada b b y b b agua b
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8.a b>0,bA、a b -a –bB、a -a b -bC、a -b b -aD、-a -b a b
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9.b b b
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10.设a,b满足A、a a <a bB、b a <b bC、aa<b aD、b b <a b