2018年6月四六级真题答案※ 微信对答案 ※ 万题库估分

　　46.B Add to their work efficiency.

　　47.A Earn more money

　　48.C How long its positive effect lasts.

　　49.D Their memories were greatly strengthened.

　　50.A Find financial support.

　　51. B) It was stolen more than once

　　52. D) They pressed criminal charges in vain

　　53. D) His acknowlegement of helpful from a professional

　　54. D) Make it available online

　　55. B) Radical changes in archivong practices

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