2022英语周报八广州答案

、选择题要多种酶参与,B项正确;静脉注射放射性标记的胆固1.A【解析】乙酸和胆固醇的组成元素是C、H、O,不可醇后,放射性大部分进入肝脏,说明肝脏是处理胆固醇以用N标记乙酸来研究胆固醇的合成过程,A项错的重要器官,C项正确;甲状腺激素能加速胆固醇进入误;由乙酸到胆固醇的全部生物合成过程,至少包括36肝脏的过程,说明甲状腺激素可以降低血液中胆固醇的步化学反应,因此乙酸生成甲基二羟戊酸的过程可能需含量,D项正确。·14·

参考范文:Soon, Mr Lim's business became better and better with the help of his eldest son. He often helped his fatherwith his work. This boy was very good with his hands. He proved very popular with his customers. It was hewho expanded his fathers business after he dropped out of school when his father needed his help in their grow-ing bicycle business. He started a motorcycle repairing service to add on to his fathers trade Business at MrLims shop took off like a rocket and they soon lived a good life.It was at that time that my fathers business took a turn for the worse. One day, his senior assistant ranaway with a large number of the shop's earnings, which led to my father's being in debt. My father then sold ourfamily car to pay off the increasing bills. They say that one good deed deserves another Mr lim, came to learn ofour situation and stepped in to help. he stated simply that it was his turn to repay the kindness that my fatherhad shown to him in the past. With his generous help, my father's business gradually returned to normal

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