问题
选择题
下列算式正确的是[ ]
A．3a+2b=5ab
B．3x5+2x5=5x5
C．6x2y﹣5xy2=x2y
D．7ab﹣b=7a
答案
答案：B
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下列算式正确的是[ ]
A．3a+2b=5ab
B．3x5+2x5=5x5
C．6x2y﹣5xy2=x2y
D．7ab﹣b=7a
答案：B
| 补全对话，从方框内7个选项中选择5个恰当的句子完成对话。 | |
| A: What are you going to do tomorrow? B: I'm going to Zhongshan Park with my friends. A: 1 B: Yes. I have been there twice. Oh, would you like to join us? A: Join you? 2 B: I find there is lots of rubbish in the park. It looks dirty. 3 A: Yes, I do. B: 4 A: Good idea! We should do something to make our city more beautiful. 5 B: We will go there by bike at about 8 o'clock in the morning. A: OK. I'll go and meet you at the gate of the park.
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