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1、We are certain that he will get over his illness. 【频率2次】 A sure B happy C surprised D excited 2、A research center has been set up in this country.【频率2次】 A praised B established C reformed D criticized 3、If headaches only occur at night，lack of fresh air is often the cause.【频率3次】 A deliver B fall C happen D arrive 4、The ice is not thick enough to bear the weigh of a tank.【频率3次】 A suffer B accept C receive D endure 5、A small number of firms have stopped trading 【频率2次】 A hotels B shops C restaurants D companies 6、In order to survive man needs to consume food and water.【频率2次】 A work B play C 1ive D walk 7、The researchers have just completed a study of driving situations.【频率2次】 A started B finished C changed D made 8、It seems highly unlikely that she will pass the exam.【频率3次】 A very B completely C usually D mostly 9、Their parents once 1ived under very severe conditions.【频率3次】 A sound B hard C strict D tight 10、Michael is now merely a good friend.【频率3次】 A largely B possibly C just D rarely | 
