题目内容
平面x-y+1=0过z轴。
查看答案
搜索结果不匹配？点我反馈
更多问题
直线的方向向量是唯一的。
Cloze 1. Theme-relatedRead the passage carefully until you have got its main idea, and then select one appropriate word for each gap from the box following the passage.A homesteader(自耕农)is a person who lives a self-reliant lifestyle with major emphasis on home production. While the Industrial Age is being____(1) by information and electronics, some people try to seek an escape from the social, environmental, and economic mad- ness of the modern age and begin to____ (2) returning to the country. As this lifestyle is so enjoyable, satisfying and rewarding, more and more people are prepared to (3) their job in the city andstart a new and more meaningful life on their various farms. For some it has become not only a way of life, but also a way of looking at the____________ (4).Of course, life in the country can be pretty____ (5). While it is an enjoyment to be so close to Nature, you may have to reduce your dependence on____(6) by cutting back on your daily consumption. You may also have to cook your own meals every day and____ (7) your own low-cost entertainment without the (8) thatare common in cities. On____(9), however, living in the country has long been a part of the American Dream. Generations of Americans have considered the country an____(10) setting in which to live and raise a family.consider creative world fuels luxuriesoccasions ideal applied replaced initialquit tough provide assist balance
I.CIoze1.Text-relatedComplete the passage with words chosen from the Words and Phrases to Drill box. Change the form where necessary.Jim Doherty may not be a born farmer, but he ____(1) without too much trouble. Not that he has had it easy. That first hard winter he faced must have left him with the____(2) to give up and go back to the city. But he managed to____(3) it without losing heart. He’s picked up a lot of skills since then and made some real ____(4) to his farm, though without much laborsaving machinery, ____(5) that old rotarycultivator. I____(6) he doesn’t make all that much, though he does have his writing to ____(7) what little____(8) he makes from the farm. I guess he does it primarily for the quality of life. Certainly, they seem a happy family and you can often see them out working together, one day spraying apple trees, the next____(9) firewood.
低硅生铁冶炼
微信支付 
支付宝支付