正常人血清中的胆红素主要是() A.结合胆红素 B.未结合胆红素 C.与珠蛋白结合的 发布时间:2019-02-13 04:27 │ 来源:www.tikuol.com 题型:单项选择题 问题: 正常人血清中的胆红素主要是()A.结合胆红素B.未结合胆红素C.与珠蛋白结合的胆红素D.游离胆红素E.δ胆红素
题型:单项选择题 What do you think of the most important inventions in the world? The TV? The printing? The telephone? Or the computer? A report shows that they are not the only important inventions. Here are three other important inventions.One of the simplest(最简单的) inventions is the toilet(冲水式马桶). Before toilets, waste ran into rivers from people’s houses. Illnesses were common in big cities, and it was often difficult to find clean drinking water.Animal food is another important invention. Before the invention, most animals were killed(杀死) every autumn because there was not enough food for them in winter. After hay (干草) became a kind of common animal food, animals could live through the long winter. The third great invention is glasses. Glasses help people read, write and do “close work” after the age of 45. Without glasses, the world would be difficult for the people above 45.InventionsSome most important inventionsThree other simple inventionsBefore the inventionsThe TVThe printingThe telephone小题1:_______The toiletWaste ran into rivers from people’s house.Illnesses were common in big cities.小题2:It was often difficult to find ___________.Hay /Animal foodPeople killed most animals in autumn because小题3:____________________________________ in winter.小题4:_______Reading, wrting and other “close work” would be difficult for the people 小题5:___________________________if there were not glasses. 查看答案