下列各算式中，合并同类项正确的是

题干

下列各算式中，合并同类项正确的是（）

A：x²+x²=2x²

B：x²+x²=x⁴

C：2x²﹣x²=2

D：2x²﹣x²=2x

上一题下一题 0.0难度选择题更新时间:2019-09-05 10:40:14

A

A: Hey, Gao Hui! ____

B: Yes. I received it last night.

A: What did she talk about in the email?

B: Lots of English ways of life.

A: ____Could you tell me some?

B: Sure. In England people have afternoon tea.

A: What's afternoon tea?

B: ____ English people not only drink tea but also eat small cakes.

A: Great! I love cakes. ____

B: OK! English people drive on the left-hand side of the road, and they can drive at the age of seventeen

A: Wow! ____

A. That's interesting!

B. I wish I were English.

C. Did you receive Cindy's email?

D. It's not just a drink but a light meal at around 4 pm.

E. Can you give me another example of the English way of life?