题目

在直角坐标系中，将点（?2，3）关于原点的对称点向左平移2个单位长度得到的点的坐标是 ．  答案：【答案】（0，?3）．【解析】试题分析：∵点（?2，3）关于原点的对称点为：（2，?3），∴（2，?3）再向左平移2个单位长度得到的点的坐标是：（0，?3）．故答案为：（0，?3）．  Probably you have seen photos of the Grand Canyon. But you must go there 1     to feel its size and beauty. The Grand Canyon is one of the greatest 2    wonders of the world.  The Colorado River made the Grand Canyon over millions of years. Slowly,the river cut down 3    hard rocks. At the same time,the land was 4    Today the canyon is very 5     It's also very 6     ，about 15 kilometres. And 7     its height,there are different kinds of plants and animals on both sides of the canyon.  The canyon looks different at different times of the day,and 8     different seasons and weather. At sunrise,the red,gold,brown and orange colours of the rocks are 9     clear and bright. Whether you see the Grand Canyon from the top or the bottom,it will be a(n) 10     that you will never forget. (   ) 1.A. you   B. your   C. yours   D. yourself(   ) 2.A. natural   B. modern   C. ancient   D. national(   ) 3.A. along   B. through   C. across   D. past(  ) 4.A. rise   B. rising   C. rose   D. risen(   ) 5.A. small   B. dangerous   C. deep   D. low(   ) 6.A. long   B. deep   C. high   D. wide(   ) 7.A. as a result   B. because of   C. because   D. thanks for(   ) 8.A. in   B. on   C. at   D. for(   ) 9.A. especially   B. friendly   C. hardly   D. differently(   ) 10.A. interview   B. trip   C. visit   D. experience