Question

【题目】Rick has learned a lot about Chinese culture _____ he came to China.

A. before B. when C. until D. since

Answer 1

【答案】D

【解析】句意：自从Rick来到中国，他已经学到了很多中国文化。本题考查引导状语从句的连词的用法。before在……之前；when当……时候；until直到……为止；since自从。由从句用一般过去时，主句用现在完成时可知设空处用since引导时间状语从句，故选D项。