Unit 1 Great scientists BOOK5考点摘要 单词 engine, characteristic, radium, theory, infect, scientific, examine, conclude, analyse, repeat, defeat, attend, expose, cure, control, absorb, severe, pump, blame, immediately, handle, addition, announce, certainty, instruct, cautious, reject, enthusiastic, positive, contribute, backward,construction. 短语steam engine, from …to …, put forward, make/draw