23．While having breakfast,Lee went through all the ------ ad

23．While having breakfast,Lee went through all the ______ ads in the newspaper,hoping to find a suitable job．
A．identified B．classified C．simplified D．clarified
本题选择B,整句意思为：
吃早餐的时候,李翻遍了报纸中所有的分类广告,希望找到一份合适的工作.
identified 表示“确定的,确认的”,原形identify,一般用于身份确认,物品确认,比如 identified criminal 身份已确认的罪犯；classified 表示“分类的,归类的”,原形classify,分类；simplified 表示“简化的”,原形simplify；clarified 表示“澄清的”,原形clarify；从意思上就可以得出正确答案.
24．The employees were made to spend as much time as they could ______ more products to meet the _______ market．
A．producing; growing B．to produce; grown C．to produce; growing D．produced; grown
本题选A,spend some time (in) doing sth.这是个固定短语搭配嘛,其中in是可以省略的；除了说花时间外,也可以花费精力（energy）,花费金钱（money）等,后面搭配不变；
27．Scott was very nervous at the beginning,but finally he _____ his courage to speak it out,and the teacher accepted his apology and forgave him．
A．made up B．brought up C．worked up D．lived up
本题选C,考察几个动词短语的意思.
make up 有“编造”的意思,比如make up a story,编造故事；还有“弥补,偿还”的意思,比如How can I make up?我能如何弥补?还有“化妆”的意思,比如It didn't take her long to make up.她很快就化妆好了.
bring up 有“教育.培养”的意思,比如My aunt brought up four children.我姑姑养了四个孩子.还有“提及,提出”的意思,比如 I’d like to bring up the question of pollution.我想提一下污染问题.
work up 就有“引起,激起”的意思,用在句中正好；
live up 是“快乐地过日子”的意思.
28．Spoken English slightly differs from country to country．For instance,in some parts of the US the “r” sounds at the end of the words______． A．is dropped B．have dropped C．has dropped D．are dropped
本题选D,整句意思为：
各国的英语口音稍有不同.例如,在美国某些地区,单词最后的r音都不发出来.
后面这个句子的主语是sounds,因此谓语要用被动语态,表示被丢弃,不发声.而sounds是复数形式嘛,自然用are连接.
30．–What a pity!I didn’t attend the lecture given by Dr．Green yesterday． —I _____,either,if my parents hadn’t reminded me． A．wouldn’t B．hadn’t C．didn’t D．wouldn’t have
本题选D,考察虚拟语气的用法.
回答者实际上是参加了讲座,因为他父母提醒了他,因此这句话是虚拟语气,表示与现在事实相反的情况,现在事实是I attended the lecture given by Dr.Green yesterday.所以根据虚拟语气结构would + have + done转变.
打字好累啊,望楼主支持~