第22题,Our decision rests on the results of several experiments. A、错误 B、正确
第23题,New difficulties arose as we were revising our plan. A、错误 B、正确
第24题,The boy is often heard to practice singing in the music room. He sings very well. A、错误 B、正确
第25题,Dr. Smith was always concerned about the poor and the sick, often providing them with free medical care. A、错误 B、正确
第26题,Mr. Brown often wore a heavy coat because he was not used to live in such a cold climate. A、错误 B、正确
第27题,Although they plant trees in this area every year, but the tops of some hills are still bare. A、错误 B、正确
第28题,Reviewing their work will give us a much better feel for the wide differences between the two schools of thought. A、错误
B、正确
第29题,He was so a dynamic speaker that he held our attention every minute of the three-hour lecture. A、错误 B、正确
第30题,They are trying to exploit the waste discharged by the factory for profit. A、错误 B、正确