When products made in factories _____, they are thrown away as garbage.
A. come to an end B. are put to use
C. are used up D. wear out
When products made in factories _____, they are thrown away as garbage.
A. come to an end B. are put to use
C. are used up D. wear out
D
wear out本题中意指（become useless form continued use of wear）用坏，穿破，如：The machine will soon wear out.(这机器即将用坏。)come to and end(结束)，put ... to use(投入使用), use up(用完)， come into use(开始投入使用)。