我国社会主义基本经济制度的确立是由____ 决定的。

下面词语中，音形义有错误的一项是（     ）。

抗美援朝战争对新中国产生的影响包括（   ）
①激发了中国人民的民族自豪感②提高了新中国的国际威望
③为我国赢得了相对稳定的和平环境④有力地保障了开国大典的顺利进行

Sue: Hello, I want to buy some ping­pong balls. Can you help me?

Clerk: Sure. Do you like these balls or those balls?

Sue: I like these balls. How much are they?

Clerk: They're 2 dollars each.

Sue: I need three ping­pong balls.

Clerk: OK. Here they are.

Sue: Thank you.

Clerk: You're welcome.