Unit 4 Journey Across a Vast Land Reading and Thinking学案（含答案）高中英语人教版选择性必修2

一、温故 1. Prior to participating in the activity, my father reminded me to be in _________ (associate) with those thinking positively. 2. They are generally classified into three broad _________ (category) —stones, stony irons and irons. 3. We grow large _________ (quantity) of potatoes in these areas...