导 语
一、一词多义
1.firm
1)( ) Bake the cakes until they are firm to the touch.
2)( ) They remained firm friends .
3)( ) With a firm grip on my hand, he pulled me away.
4)( ) This book will give your students a firm grasp of English grammar.
5)( ) She held firm to her principles.
6)( ) This product claims to firm your body in six weeks.
2.board
1)( ) The exam results went up on the board.
2)( ) The board is/are unhappy about falling sales.
3)( ) He pays ￡90 a week board and lodging.
4)( ) Have the passengers gone on board yet ?
5)( ) Flight BA193 for Paris is now boarding at Gate 37.
二、重点词搭配填空
1. engage(vt. engage吸引注意力/兴趣 engage body and brain；vi. engage in从事，参与（强调动作） engage in research ; engage with...使衔接，啮合；与...建立密切关系；n. engagement订婚, adj. engaged, be engaged in忙于（强调状态）, be engaged to 与..订婚）
①【2019·全国卷I，D】Enviable as the cool kids may have seemed, Dr. Prinstein’s studies show unpleasant consequences. Those who were highest in status in high school, as well as those least liked in elementary school, are most likely to dangerous and risky behavior.
②She has the ability to young minds.
③I am 20 years old and the girl of my dreams.
④One cogwheel（齿轮） the next.
⑤It is a movie that both the mind and the eye.
2.involve(v. involve (doing) sth包括investments involve risk, 影响an incident involving youth；involve sb in sth使参与, involve people in celebration; adj. involved参与的, get/be involved in；n. involvement)(联想 include, be comprised of, be composed of)
① 【2019·江苏卷，B】Most of us，when we talk about volcanoes，think of the classic cone(圆锥体)shapes of a Fuji or Kilimanjaro，which are created when erupting magma(岩浆)piles up. These can form remarkably quickly. In 1943，a Mexican farmer was surprised to see smoke rising from a small part of his land. In one week he was the confused owner of a cone five hundred feet high. Within two years it had topped out at almost fourteen hundred feet and was more than half a mile across. Altogether there are some ten thousand of these volcanoes on Earth，all but a few hundred of them extinct. There is，however，a second less known type of volcano that doesn't mountain building. These are volcanoes so explosive that they burst open in a single big crack，leaving behind a vast hole，the caldera. Yellowstone obviously was of this second type，but Christiansen couldn't find the caldera anywhere.
②I don't want to office politics.
③【2015年，天津卷】Once when I was facing a decision that high risk, I went to a friend. He looked at me for a moment, and then wrote a sentence containing the best advice I’ve ever had: Be bold and brave — and mighty (强大的) forces will come to your aid.
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