—Do you like the weekly talk show,The Readers,on CCTV?
—Sure. It's a great TV program _____ purpose is to bring the habit of reading back into the public.
定语从句
句意为：——你喜欢中国中央电视台的每周脱口秀节目《朗读者》吗？——当然。这是一个很棒的电视节目，其目的是把阅读习惯带回到公众中。分析可知，空处引导定语从句，先行词TV program在定语从句中作purpose的定语，故用关系代词whose引导定语从句。故选选项D。
—The school network will be _____ for safety reasons.
—That doesn't worry me at all. I'm not a net-worm,anyway.
动词短语的辨析
句意：——出于安全原因，学校的网络将会关闭。——那一点都不会让我焦虑，反正我不是网虫。根据本题语境可知，shut off “关闭” 符合题意。
I'm sleepy. I prefer _____ at home to going out for a walk.
考查prefer的用法
根据设空后的 to going... 可知，本题考查的是 prefer doing A to doing B 的结构，“宁愿做A而不喜欢做B” ，故答案为选项A。
Tom is very lazy. He prefers _____ in bed rather than _____ out to take part in some outdoor activities.
根据本题语境可知，汤姆宁可躺在床上，也不想出去参加户外活动。prefer to do A rather than do B意为 “宁愿做A事，也不想做B事”，故答案为选项A。