单项选择题______年,英国人勒本提出了煤气机的原理。 A. 1825 B. 1881 C. 1801 D. 1885
多项选择题Listen to the prices of five items and choose which TWO prices are correct. u10-2 A、Lunch costs ￡3.60. B、The entrance fee is €3. C、The ticket price is ￥300. D、The budget for a new house is $500,000.
