[精] Unit 1 What can you see Let's learn 课前预习单(目标导航+培优练习)
[精] Unit 1 What can you see Let's act Let's play 课前预习单(目标导航+培优练习)
[精] Unit 1 What can you see Let's talk课前预习单(目标导航+培优练习)
[精] Unit 2 Touch and feel Let's act 课前预习单(目标导航+培优练习)
[精] Unit 2 Touch and feel Let's play 课前预习单(目标导航+培优练习)
[精] Unit 2 Touch and feel Let's talk Let's learn 课前预习单(目标导航+培优练习)
[精] Unit 3 Can you hear a train Enjoy a story 课前预习单(目标导航+培优练习)
[精] Unit 3 Can you hear a train Let's learn 课前预习单(目标导航+培优练习)
[精] Unit 4 Things I like doing Do a survey 课前预习单(目标导航+培优练习)
[精] Unit 4 Things I like doing Let's act 课前预习单(目标导航+培优练习)