英语周报2019~2022第55期七年级答案

9.A【命题意图】本题考查三角恒等变换、二倍角公式,体现了数学运算的核心素养【解析】sin 0+cos0cos 20+sin 20 cos 0-sin 0+2sin Acos aan2+1(-3)2+11-tan26+2tan61-(-3)2+2x(-3)7故选A.

第一节Last Sunday, I as well as some of my classmatespay a visit to a nursing home, where we did somevoluntary works. On arriving there, we got down to helpworksome old people do some washing and did all wecould A make them comfortable and happy. Betweenhem, an old granny left an unique impression on us.Though she was in her nineties, but she was stillstrong and active. She offered to perform PekingOpera in return for her kindness. Her performance wasso wonderfully that we were all impressed by it, afterwonderfulwhich we had a pleasant chat. When praised for thatwe had done, we made up our minds to be a usefulthe future第一处:pay→paid【解题思路】考查时态。根据前面的时间状语 L ast Sunday可知,本句应用一般过去时。故将pay改为paid第二处: works→work【解题思路】考查名词。work意为“工作”时为不可数名词,故将works改为work第三处:hep→ helping【解题思路】考查非谓语动词。 get down to doing sth意为“开始做某事”,为固定用法,其中to为介词,后接动名词作宾语。故将help改为 helping第四处: could后加to【解题思路】考查非谓语动词。由语境可知,“我们”帮助老人洗衣服的目的是使老人们感到舒适和开心,所以此处应用动词不定式表目的。故在 could后加to第五处: Between→ Among【解题思路】考查介词。 between意为“在两者中”,根据常识可知,敬老院不可能只有两位老人,所以此处应用 aInong,表示“在三者及三者以上中”。故将 Between改为 Among。第六处:an→a【解题思路】考查冠词。 leave a/anmpression on sb意为“给某人留下……印象”,为固定表达。且 unique的发音是以辅音音素开头的,其前应使用不定冠词a。故将an改为a第七处:删掉but【解题思路】考查连词。在英语中, though与but不能连用,故删掉but第八处:her→our【解题思路】考查代词。根据上文可知,是作者和同学去了敬老院帮助老人,所以此处是指“她主动要为我们唱京剧作为对我们善良行为的回报”。故将her改为our第九处: wonderfully-→ wonderful【解题思路】考查形容词。分析句子结构可知,be动词后需要用形容词在句中作表语,故将wonderfully改为 wonderful第十处:that→what【解题思路】考查宾语从句。分析句子结构可知,for后为宾语从句,并且引导词在该从句中作宾语,有实际意义。故将that改为what

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