题目内容：

（1）There is _____ water _____ air in space.
A.not;or B.no;and C.no;or D.not;and
(2)Class Two students will have a ______ of geography.
A.knowledge B.study C.idea D.way
(3)I think she ______ about her lessons.
A.need't worry B.doesn't need worry C.needs not worry D.need't to worry

优质解答

1.C否定句中的and要变成or2.Ahave a knowledge of sth 了解...3.A考查need作为情态动词和行为动词的区别.情态动词时,否定直接在need后面加not,再跟动词原形,所以选A；行为动词时,否定借助于助动词don't/didn't/doesn...