题目

甲状腺激素对于人和高等动物具有极其重要的生理作用，下图是关于碘及其化合物与甲状腺素的转化网络图示。  （1）请写出在强酸性条件下，由KI和KIO3反应制得I2的离子方程式：          。（2）上述图示中，碘元素发生氧化反应的过程有          （填序号）。（3）制备KIO3的方法较多：利用③的原理是I2在一定条件下还原KclO3，写出该反应的化学方程式：                   。（4）利用①的原理是以石墨为阳极，不锈钢为阴极，K1 Have you ever wished to have an umbrella that makes your hands free? Alan Kaufman has come up with the “Nubrella”, which means “new” + “umbrella”. It is the first truly hands-free umbrella in the world. The inventor says that it stops rain, wind and snow and can keep your head, face and hair dry. “I never planned to invent anything. Ijust noticed a problem and came up with an idea,” said the inventor. The idea for the invention began on one rainy day. Mr. Kaufman was standing in one of his stores. He began to look at people’s umbrellas. He found that they had to try very hard to keep their umbrellas in the right place. At that moment an idea came into his mind. He ran to his desk and drew a picture. In this way, the Nubrella was born. One cool thing about the Nubrella is that you don’t hold it like a normal umbrella; you wear it. When walking in the rain with the Nubrella, your hands are free, so you are able to use your phone or drink a hot cup of coffee .Also, the Nubrella is much safer than old ones. 1.“Nubrella” is a kind of____________ umbrella. A. normal            B. hands-free               C. old            D. paper 2.“Nubrella” was born on a ____________ day. A. sunny             B. hot                   C. windy       D. rainy 3.You use the Nubrella by____________. A. wearing it                                   B. putting it on your head C. using your hands to hold it            D. putting it on your bike 4.The writer writes this passage to____________. A. ask us to buy this new kind of umbrella B. talk about a great inventor named Alan Kaufman C. tell us about a new invention that’s very useful D. tell us the inventor didn’t want to invent anything