单选题 Many domestic appliances are left to run continuously and ______ consume large amounts of electricity.
A. although
B. even though
C. whereas
D. thus

【正确答案】 D
【答案解析】选项(D)thus(因此)是表达后果或结果的副词。选项(A)although(尽管)、选项(B)even though(即使)和选项(C)whereas(然而)均是表达对比的连词。