B．while C．before

　　D．because 解析：选C。考查连词的用法。句意：董事长犯了一个错误，但是后来他在情况恶化之前进行了纠正。before表示“在……之前”。 Unit 4　Wildlife protection　 保护野生动植物

　　重点难点研析 知能强化训练 Unit

　　4 基础知识自采 基础知识自采 1．The manager____________(雇用)another 20 workers for the new positions. 2．On just the second day of the trip，I was____________(咬)on the leg by a snake. 3．There is a____________(凶猛的)dog to guard the house.Please knock at the door before you enter. 4. The book____________(包含)all the information you need. 核心词汇 5．We cannot emphasize too much the____________(重要性)of learning English. 6．As the____________(收入)level increases，more people can afford a car now. 7．He took the poor children under his____________(保护)． 8．I’d____________(感激)it if you let me get on with my job. 9．To our____________(宽慰)，the missing child returned home ten days later，tired but healthy. 10．The government shouldn’t____________(减少)the income of the workers by raising their taxes. 11．用distant的适当形式填空 (1)Nowadays，with such a good public transportation system，it’s easy to take trips to____________places. (2)The faces of four famous American presidents on Mount Rushmore can be seen from a____________of 60 miles. 12．The company____________heavily because of wrong judgement.At present，they are at a____________as to what kind of business to start.(lose) 1.employed　2.bitten　3.fierce　4.contains　5.importance　6.income　7.protection　8.appreciate　9.relief　10.decrease　11.(1)distant (2)distance　12.lost；loss 1．________________灭亡；逐渐消失 2．________________

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