A：f-34>fa4+a2+1
B：f-34≥fa4+a2+1
C：f-34<fa4+a2+1
D：f-34≤fa4+a2+1
我国现阶段经济制度中，占主体地位的是 ，对经济发展起主导作用的是 。
把正确答语前的字母填到横线上
①6How many birds do you see?____
②I'd like car 18,please.____
③What's this?____
④How many balls do you have?____
a. I have 11. b. OK c. My new crayons d. I see 15.
