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jackisverygoodatscience,hisbrotherisabslutelyhopeles.awhenbascwhiledsince答案选为什么

题目详情
jack is very good at science ,his brother is abs
lutely hopeles.a when b as c while d since 答案选为什么
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答案和解析
Jack is very good at science (while) his brother is absolutely hopeless.
杰克很擅长理科,而他的兄弟绝对是不可救药了.
while在句子里是 "而" 的意思而不是 "当".