2.1 正数与负数一、随堂检测1、中,正数有 ,负数有 。2、如果水位升高 5m 时水位变化记作+5m,那么水位下降 3m 时水位变化记作 m...
3.6 整式的加减基础训练一、填空题1.3x 与-5x 的和是 ,3x 与-5x 的差是 .2.如果代数式 2x3和 x m的和是一个单项式,则 m= ....
3.3 代数式的值基础巩固1.当 a=-2,b= 12 时,代数式 a2+b2-3 的值是( ).A. 114 B. 112C.114 D.1122.已知12xy...
代数式基础自测1. “a 的 2 倍与 b 的和”用代数式表示是…………( )A.a2+b B.2a+b C.2(a+b) D.a+2b2. 下列代数式书写规范的...
Unit 1 Animal FriendsSection B 2a-2b & Project一、英汉互译① not … at all ___________ ② beautiful fur __________...
Unit 1 Animal FriendsSection B 2a-2b & Project一、英汉互译① not … at all ___________ ② beautiful fur __________...
Unit 1 Animal FriendsSection B 1a-1d一、英汉互译① a symbol of ___________ ② pick up ______________③ save elephan...
Unit 1 Animal FriendsSection B 1a-1d一、英汉互译① a symbol of ___________ ② pick up ______________③ save elephan...
Unit 1 Animal FriendsSection A Grammar Focus一、英汉互译① some sheep ___________ ② in the sea ______________③ a...
Unit 1 Animal FriendsSection A Grammar Focus一、英汉互译① some sheep ___________ ② in the sea ______________③ a...
Unit 1 Animal FriendsSection A 2a-2f一、英汉互译① fly like other birds ___________ ② swim fast ______________③ s...
Unit 1 Animal FriendsSection A 2a-2f一、英汉互译① fly like other birds ___________ ② swim fast ______________③ s...
Unit 1 Animal FriendsSection A 1a-pronunciation一、英汉互译① my favorite animal ___________ ② take good care of _...
Unit 1 Animal FriendsSection A 1a-pronunciation一、英汉互译① my favorite animal ___________ ② take good care of _...

