2025-12-31点击次数：45
【华慧考博】考博英语每日一练（12.31）考博加油！
1. George has a big coffee ______ on the front of his jacket.
A. spot
B. mark
C. stain
D. patch
2. Steel is not as ________ as cast iron; it does not break as easily.
A. elastic
B. brittle
C. adaptable
D. flexible
【专业词汇翻译】
1.可再生能源体系
2.全国温室气体自愿减排交易市场
