一、单元扣点
Ⅰ.根据句意，用所给单词的适当形式填空
predict switch disable outdoors optimistic
alternative urban recreation attach resources
1．It's dark, so you shouldn't ________ off the lights in the classroom.
2．It is raining heavily outside and the children can't play games ________.
3．Her job is to ________ labels to the luggage of the passengers at the station.
4．We should value and make better use of our natural ________.
5．Skating and skiing are two ________ activities favored by children who live in cold and hilly areas.
6．You have the ________ choices of telling us the truth or remaining silent.
7．An expert's ________ shows that the atmosphere will be 3℃ warmer in 2005 if people continue to burn fuels.
