39期英语周报七年级（2021-2022）答案

【语篇导读】本文是一篇说明文。西伯利亚贝加尔湖多年的冰环之谜终于被解开了,答案就在于冰面下方的暖流漩涡:科学家们对漩涡的成因也有了初步判断,正在进一步的探索中28.【答案】D【命题意图】词义猜测题。【解析】第四段该句中, while表对比, ephemeral与 lasted for weeks or even months“持久的”意义相反,是“暂时的”B项为现在的,目前的”,与“过去的”(0)和“将来的m意义相对,所以不对。A、C则与whil后文意义不能形成对比。29.【答案】B【命题意图】细节事实题。【解析】考查因果关系。从第二段第三句 In the eddy center, the ice does not melt-- even though the water iswam- -because the currents are weak可知B项正确,因为暖流不够急促,所以造成只有冰的边缘才能融解的现象:A项偷换概念,从第三段最后一句可知漩涡水温高于周边水温,不是冰环中心与边缘温差的比较,更不是题干原因;C项同样表述有误,从第四段第一句可知其讲述的是 Most of the rings,不是 the ice in the center of ice rings,而且答非所问;D项表述不准确,从第二段第二句可知, water inthe centre应改为 warm eddies,并且不是冰环中心保持冻结的原因。30.【答案】C【命题意图】细节理解题【解析】从文章最后一段可知C项正确。从最后一段第一句 Researchers are still investigating what causesBaikal's eddies.可知 Baikal' s eddies的成因尚不明确,故A项错误,根据第一段第二句,A项可改为the rings are caused by warm, circular currents.;根据第二段第一句可知B项表述错误;根据第三段Kouraev and his colleagues.. set sensors capable of measuringg the temperature and salinityof the water to adepth of700fet可知D项偷换概念。31.【答案】A【命题意图】标题归纳题。【解析】此文主要介绍了西伯利亚贝加尔湖多年的冰环之谜答案在于冰面下方的暖流漩涡,所以选A。解答漩涡之谜并非本文重点,只在最后提及而已,B项表述有误:C项的范围太大;D项范围缩小,不足以概括文章。

第一节短文改错(-)答案与解析Once I was asked to coach a community basketball team. Though have many good players, thehavingteam never won the game. I quickly found out what they could not win hot the first time I watchedawhythem play their game. Everyone desires to be a start. I pointed out that somebody would be a star ifdeesirednobodythey didn't show the team spirit and support each other. Evident they began to realize the ir mistake.orEvidentlyIn the following practices, every team member would pass the ball to other members who were in abetterposition/ score points. When they finally won a game, they all learnt the strengths ofstrengthteamwork71.【答案】第二句中have改为 having【命题意图】考查非谓语动词。【解析】 Though引导的状语从句省略,have与主句主语构成主动关系,故用现在分词。72.【答案】第二句中the改为a【命题意图】考查冠词【解析】首次提及game此处是泛指,“没能赢得一场比赛”73.【答案】第三句中what改为why【命题意图】考查名词性从句。【解析】根据上下文,意思是“我很快发现他们不能获胜的原因了”。74.【答案】删除第三句中的for【命题意图】考查介词。【解析】 the first time引导出一个时间状语从句,“当我第一次看他们打球的时候75.【答案】第四句中 desires改为 desired【命题意图】考查时态。【解析】此处为一般过去时76.【答案】第五句中 somebody改为 nobody【命题意图】考查不定代词。【解析】根据句意,“我指出,如果他们不能展现团队精神相互支持,就没人能成为球星。”77.【答案】第五句中and改为or【命题意图】考查连词。【解析】否定句表示并列连接则用or,不用and78.【答案】第六句中 Evident改为 Evidently【命题意图】考查形容词与副词。【解析】副词可以用来修饰整句话内容。类似的还有 Fortunately, Luckily, Happily, Surprisingly等。79.【答案】第七句中 score前加to【命题意图】考查非谓语动词。【解析】不定式作目的状语。…. pass the ball to other member… to score points80.【答案】第八句中 strengths改为 strength【命题意图】考查名词【解析】此处 strength为不可数名词“(团队合作的)力量”

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