七年級(jí)上冊(cè)數(shù)學(xué)基礎(chǔ)訓(xùn)練答案

怎么沒(méi)看見(jiàn)你的題目啊

找八年級(jí)的小朋友問(wèn)問(wèn)

利用面積不變來(lái)計(jì)算高。
3*4/2=6平方米
設(shè)斜邊上的高為X米，
5X/2=6
5X=12
X=2.4
答：斜邊上高為2.4米

往乙袋中加入5kg大米就與甲袋一樣重，也就是加入5kg后重量是原來(lái)的1.2倍。

5kg就是原來(lái)重量的0.2倍。

所以乙袋大米原來(lái)重25kg，甲袋大米原來(lái)重30kg。

iuiuopdi

靠自己的知識(shí)去做題，還用什么答案。不懂的去請(qǐng)教身邊的人。希望這位學(xué)生靠自己去填寫

practice3. A，聽(tīng)錄音，圈出聽(tīng)到的字母組合或單詞。

1、Are you wearing a red dress?

2、Come and look at my picture.

3、There was no gym in my school.

4、Are you going to use any books?

5、I like to ice-skate and play in the snow.

1、I went fishing.

2、No，i didn‘t.

3、I played basketball.

4、Yes,i did.

5、I went to the park on last Monday.

1.When I was a child,I didn't like tomatoes.
2.Where did you live before you arrived here?
3.Liz has a short hair,but her hair was long before.
4.I used to play tennis,but I play golf these days