语法填空

    While many countries love their tea, UK citizens are particularly proud of being “tea people”. The average UK citizen consumes nearly 2 kilograms of (dry) tea each year.

    Tea only made its way to England in large ____(quantity) in the first years of the 17th century. Tea from China and a few other Asian countries____(sell) more widely in England at that time. Then tea was getting more and more popular among different social classes.

    There are many varieties of tea. They all come from the plant Camellia sinensis (茶树), and are____(simple) processed in different ways. Black tea mixtures are still____most common type drunk in the UK. The reason why black tea is dark in colour is ____the leaves have been allowed to oxidize (氧化) before drying. People usually serve ____with milk or lemon.

    You may still find tea made with loose tea leaves, served up in a pot, and ____(pour) into the best china cups with saucers for visitors, but behind closed doors it is likely to be served in a tall cup, and made with a tea bag.

    Tea is still a large part of daily life in the UK today, but it seems to be ____the decrease. Tea sales ____(fall) by 6% in 2014 alone.

    Still, what goes around comes around; it's sure____(become) fashionable again.

     Mr. Jackson works in a college. He likes reading and often   1   some books from the library. He keeps   2   to the radio every morning and reading   3   after dinner. So he knows much and teaches well. He is also good 4his students. His students 5 him very much. Mike, Mr. Jackson's little son is only nine. He  6 likes reading books. And he often asks his father some questions. Mr. Jackson always thinks his son is too  7to understand him, so he chooses（选择）8 ones to answer. Of course the boy is not satisfied (对……满意) with them.
      One day Mike read something about the electric lights and was   9  them. When his father told him to do housework, he went on（继续）thinking  10 it. He asked him  11   questions, and his father answered all. Then his father said proudly（自豪地），“Fathers always know 12  than sons!” The boy thought for a while and said, “ 13   .” “Oh, why?” Mike didn't answer but asked. “  14  invented（发明） the electric lights?” “Thomas Edison.” answered Mr. Jackson “Why didn't his father invent them then?” Mike asked again.
       Looking at his son, Mr. Jackson didn't know   15  to answer.

美国史学家海斯·穆恩·韦兰在《世界史》中写道：“大多数制定宪法和把全国政府置于宪法之下的人，如华盛顿、约翰·亚当斯和亚历山大·汉密尔顿，都倾向于贵族政治，而不是民主政治。他们不信任平民——他们的目的在于把民主政治和贵族政治平衡来。”造成这一现象的主要原因是（    ）

氧化还原反应与四种基本类型反应的关系如图所示，则下列化学反应属于区域3的是（　　）

已知∠A=20°18′，∠B=20°15′30″，∠C=20.25°，则度数最大的是（   ）