将抛物线：y=x2﹣2x向上平移3个单位，再向右平移4个单位得到的抛物线是( )．
y=（x﹣5）2+2或y=x2﹣10x+27．
A. I have to check if there’s a room available.B. I’ve just arrived from Nanjing.C. Thank you. No problem.D. Have you made a reservation, sir (Dialogue- 1) ( R-receptionistG-guest)
R: Good evening, sir. May I help you G: Yes, please. ________ Can I have a room
在RGB彩色模型中，如果要产生黄色（Yellow），应是（）颜色的混合。
A、Red+Green+Blue
B、Red+Green
C、Red+Blue
D、Green+Blue
