①避免重复征税，优化财政收支结构

②通过税制改革以推动经济结构转型升级

③最大程度激发大众创业、万众创新的活力

④能够更好地引导人们的行为方向

任务型阅读

      One day Mrs. Thomas goes shopping（购物）. She goes into a big supermarket. She buys many things. She buys two hamburgers. They are 2 dollars each. She buys some French fries, l dollar. She buys some fruit, too. Bananas are 2 dollars and strawberries are 4 dollars. She also buys a T—shirt, socks, shorts, a dress, a hat and a bag. The T-shirt is 4 dollars. The socks are 1 dollar, and the shorts are 10 dollars. The dress is 7 dollars. The hat is 3 dollars and the bag is 6 dollars.

根据短文内容完成表格

My grandma often __________ stories to us.

下列属于克隆的过程是
①将目的基因与载体结合并在受体细胞中进行扩增
②由一个细胞经过有丝分裂形成细胞群
③通过植物组织培养将离体细胞培养成完整植株
④固体培养基上的一个细菌繁殖形成一个菌群