Unit 1 Great scientists Period 2　Learning about Language & Using Language 课件（人教版必修5，课标通用）

Ⅰ.单词识记 1．________vt.to refuse to accept，believe in，or agree with sth 2．________adj.hopeful and confident，and think about what is good in a situation rather than what is bad 3．________vi.& vt.to turn around and round very quickly，or to make sth do this 4．_________vt.to build sth such as a house,bridge,road,etc.

reject

positive

spin

construct