第6题: [单项选择]______ that the earth was flat A. Used it to be thought B. Did it used to be thought C. Was it used to being thought D. Does it used to be thought 参考答案:A 答案解析:[解析] 本题考查的是It used to do句型的疑问句形式。可以为Used it to do...或者 Did it use to do...因此A项为正确答案。
第30题: [单项选择]Small farms and the lack of modem technology have ______ agricultural production. A. blundered B. tangled C. mingled D. hampered 参考答案:D 答案解析:hamper妨碍,阻碍The army's advance was hampered by bad weather; blunder①犯大错He has blundered again.②跌跌撞撞地走