题目

根据句意和首字母或汉语提示写出单词。（每小题1分，共10分）1. It’s _____________(考虑周到的)of your parents to bring you some medicine.2. The woman often ___________(争论)with her husband .3. We’re proud that China has_________(成功 )sent up another spaceship in to the sky.4. He is a h___________ teacher, he can make us laugh.5. Do you know that the powerful red  ___________(平衡) the colour of white.6. An honest person should keep his p_________.7. I p__________ camping to hiking in the past.8. The leaders always make great___________(决定) to make o如图，在平面直角坐标系中，正方形ABCD的边长为，点A在y轴正半轴上，点B在x轴负半轴上，B（-1，0），C、D两点在抛物线y=x2+bx+c上．（1）求此抛物线的表达式；（2）正方形ABCD沿射线CB以每秒个单位长度平移，1秒后停止，此时B点运动到B1点，试判断B1点是否在抛物线上，并说明理由；（3）正方形ABCD沿射线BC平移，得到正方形A2B2C2D2，A2点在x轴正半轴上，求正方形ABCD的平移距离．