Unit 4 Wildlife protection-2021-2022学年高中英语必修二导练通（人教版）

【题干】He was at a____what to say to the teacher’s question - ob-viously he was____in thought just now． A． loss ; losing B．loss ; lost C．losing; lost D．lost; loss 【答案】B 【解析】 be at a loss“处于……迷茫中”，be lost in thought“陷入沉思”。 【题干】Have a good rest, and you need to____your energy for the tennis match this afternoon． A． leave B．reserve C．hold D．get 【答案】B 【解析】 reserve意思为“保留”。句意为：“好好休息。你要为下午的网球比赛保存精力。” 【题干】No one has come up with a convincing explanation of why the dinosaurs____． A． died out B．died off C．died away D．died of 【答案】A 【解析】 die out意为“（动植物，物种）灭绝”；die away意为“（声音或感情）慢慢变弱，逐渐消失”；die off意为“（家族等）相继死去；（草木）先后枯死”；die of常指由于疾病、情感、饥寒等原因而造成的死亡，指死于内因。句意为“没有人能提出有说服力的说法来解释恐龙为什么会灭绝”。 【题干】The driver was at____loss when____word came that he was forbidden to drive for speeding． A． a: the B．／;／ C．the; the D．a;/ 【答案】D 【解析】 be at a loss“茫然，不知所措”。句中word意思是“消息”，为不可数名词，所以不加冠词。 【题干】 I’d prefer to____my judgement until I find all the evidence． A． show B．express C．pass D．reserve 【答案】D 【解析】考查动词的辨析。句意为“我宁愿保留我的意见直到我发现所有的证据”，reserve“预订或预约（座位、住处等）；留到以后”，与后面的until相一致。 【题干】We all hope our country flourishes and that people live____． A． in relief B．in danger C．in time D．in peace 【答案】D 【解析】in relief“如释重负，松了口气”；in danger“处于危险之中”,in time“及时”,inpeace“和平地”。句意为“我们都希望我们的国家繁荣，人们和平相处”。 【题干】Some of the wolves there____the fur． A． are hunting B．are hunting for C．are hunted for D．hunt for 【答案】C 【解析】句意为“那儿的一些狼被捕杀用来做皮衣”。 【题干】He had not seen his mother for a long time, so when he saw his mother he____crying． A． burst into B．burst out C．broke out D．broke down 【答案】B 【解析】 burst into+名词=burst out+动名词。句意为“因为他好长时间没见到他的妈妈，所以当他看见她时就突然大哭起来”。 【题干】It was clear that the man was____people he owed money to． A． at the expense of B．at the risk of C．in the way of D．at the mercy of 【答案】D 【解析】at the mercy of sb“任由某人／某事物摆布或控制”；at the expense of“在损失或损坏某事物的情况下”；at the risk of…“冒（可能）……的危险”；in the way of“关于……方面”。 【题干】Stop___