A:从分子水平看,生物多样性的直接原因是蛋白质的多样性
B:从分子水平看,生物多样性的根本原因是DNA的多样性
C:从进化角度看,生物物种的多样性是由于不同环境导致生物产生不同变异的结果
D:生物多样性包括遗传多样性、物种多样性和生态系统多样性
vegetable,opposite,because,get,go
Jim's grandparents live in a black building.____the building is a bus station.Jim always____off the bus there when he comes to see his grandparents.Between the station and the building is a busy street.____down the street three hundred metres and turn right,there is a big market.Jim's grandparents usually buy fruit,meat and____there.Now they are buying beef there.They like living there____it's easy for them to buy what they need and go out.