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科学发展观是发展中国特色社会主义必须坚持和贯彻的重大战略思想。科学发展观的核心是（   ）

例：96×0.25

=24×4×0.25

=24×1

=24

12.5×0.49×0.8=____

    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．