4年级上册英语第42单元单词

设进价为x元 42x80％=（1+20％）x 求出来X=28

800除以（30➕42）

等量关系∶一本故事书42元=一本本子的价钱×15
设一本本子的价钱为x，则∶
15x=42
x=42÷15
x=2.8

照张照片或手打上去

小朋友，你借我书吧。

21×42=882
验算：882÷42=21
或：42×21=882

.......短文我听磁带写出来了，先说一下短文吧。。。

Hello,Wu Yifan.Hi,John.what are you going to do this afternoon?i'm going to a birthday card for sarah,tomorrow is her birthday.that'ok!we can do it together.

where are you going now,john?

i'm going to the post office .where is it,please?it's next to the big spermarker.

how can i ger there?you can go by the no.4 bus.get off the library. it's on the left.

you see the supermarker.the post office is next to the supermarker.

thank you very much.

you're welcome.

答案是A/B/A/B。。。。。

短文的大小写我没有太注意。。。。。。

希望可以帮助到你。。。祝你愉快。。。



雅琳

唉，有人喜欢我怎么办

具体哪个版本的

42元是百科知识半年的价格