如图,二次函数y=ax2+bx+c的图象经过点(﹣1,0)、(3,0)和(0,2),当x=2时,y的值为____ .
连线。
①Can your father play football? ____ A. Yes, she can.
②Can she ride a bike? ____ B. Here you are.
③Here's a card for you. Happy Teachers' Day! ____ C. No, he can't.
④Give me a balloon, please. ____ D. Thank you.
斯大林认为:苏联“工业化的中心、工业化的基础,就是发展重工业。”为此,苏联采取的措施是( )