①3...35.计算下列各题,你发现了什么规律?1020$$ 840 \div 21=40 $$$ 720 \div(8 \times 9)=10 420 \div(7 \times 3)=20 $$4010 20$$ 840 \div 3 \div 7=40 $$$ 720 \div 8 \div 9=10 420 \div 7 \div 3=20 $$我发现::一个数除以两个数的积等于这个数依次除以两个...
17. at no time 决不 in no time 立即,马上 at>at a time = each time 每次 at times = sometimes 有时 at...
8. There are several chemical factories pouring waste water into the stream. 9. Everything has changed. 10. pollute the sea 11. get a pain in my throat 12. produce terrible gas 13. make my chest hurt 14. what's worse...
(小四号 Times New Roman,两端对齐,段前空 2 个汉 中英文摘要关键词格式 中英文摘要关键词格式 中文题目(居中) 摘要:×××(摘要内容用小四号宋体字书写,每行与冒号 对齐;行距为固定 值 22 磅)××× 关键词:×××(关键词内容用小四号宋体字书写,每行与 冒号对齐;行距为固 定值 22 磅;关键词之间用分...
5. Describe a book that you have read many times. 多次阅读的书 6. Describe a movie you watched recently that you felt disappointed about. 让你失望的电影 7. Describe an invention. 有用的发明 8. Describe a piece of clothing you wear most often. ...