先化简,再求值:+,其中x= -1 答案: 解析:原式=当x= -1时,原式=
根据图表完成对话,每空词数不限。
Time
Thurs.
Fri.
上午
8:00
语文
数学
9:00
数学
美术
10:00
英语
英语
下午
2:30
科学
体育
4:00
历史
音乐A: 1 today? B: It's Thursday. What 2 our lessons today? A: In the morning, we have Chinese at eight o'clock. We 3 at nine o'clock. We have English 4 . I like English. B: What 5 our lessons in the afternoon? A: We 6 at 7 and we 8 history 9 . What subject (科目) do you like? B: I 10 science. It's funny. 1.______ 2. ______ 3. ______ 4. ______ 5. ______ 6. ______ 7. ______ 8. ______ 9. ______ 10. ______