核心词汇 stroke n. ○1 意外的一桩（幸事、运气或不幸）○2 中风○3 笔划○4抚摸 ○5v.抚摸 【例句】 In a stroke of luck, a suitable organ donor became available. 运气的话也会有合适的器官捐献者。 Various strokes of misfortune led to his ruin. 遭诸多不幸使他一蹶不振。 The funeral of Mr. Whitelaw, who died of a stroke, will go ahead as planned today. 怀特劳先生死于中风，他的葬礼按计划今天举行。 The character“繁”has too many strokes and children find it very difficult to write. “繁”这个字笔画太多，孩子们觉得很难写。 Cats like being stroked. 猫喜欢让人抚摸。 collide vi.○1 互撞，碰撞 ○2 严重冲突，抵触 【例句】The two planes collided with each other in midair and over 100 people were killed. 两班飞机在空中相撞, 一百多人丧生。 I ran around the corner, and almost collided with Mrs Laurence. 我从拐角跑过去，差点与劳伦斯夫人撞上了。 The President has again collided with Congress over his budget plans. 总统在他的预算计划上又与国会意见冲突了。 【派生】collision n. 碰撞，互撞；冲突 insist v. ○1 坚决要求 ○2 坚决认为，宣称 【例 句 】 The victim’s relatives insisted on immediate repayment. 受害者亲属要求立即得到偿还。 The man insisted on helping me find a taxi even though I told him I didn’t need any help. 即便我说了我不需要帮助，那人还是坚持要帮助我找一辆的士。 My parents insist we (should) report the matter to the police right away. 我父母坚持要我们立即把此事向警方报告。 The suspect insisted on his innocence. 犯罪嫌疑人坚持说自己是无罪的。 【搭配】insist on one’s idea 坚持自己的观点 insist on doing sth. 坚持(要)做某事 insist + that clause 坚持，坚决要求… 【辨析】persist in doing sth. 坚持/持续做某事, 表示持之以恒做某事、固执、不放弃；而 insist on doing sth 却表示坚持一个观点，坚持要做某事。例如：We must persist in taking the socialist road of Chinese characteristics...
