資源簡介 / 讓學習更有效 新課備課備考 | 英語學科2025年魯教版(五四學制)九年級全冊英語核心考點精講精練Unit 1 When was it invented?核心詞匯1、核心單詞invent (v.) 發明 → invention (n.) 發明discover (v.) 發現 → discovery (n.) 發現create (v.) 創造 → creation (n.) 創造物produce (v.) 生產 → product (n.) 產品popular (adj.) 流行的 → popularity (n.) 流行度accidental (adj.) 偶然的 → accidentally (adv.) 偶然地boil (v.) 煮沸 → boiled (adj.) 煮沸的remain (v.) 保持;剩余smell (n./v.) 氣味;聞起來trade (n./v.) 貿易;交易2、拓展單詞inventor (n.) 發明家scientist (n.) 科學家patent (n.) 專利experiment (n./v.) 實驗material (n.) 材料ancient (adj.) 古代的modern (adj.) 現代的useful (adj.) 有用的powerful (adj.) 強大的practical (adj.) 實用的核心短語be invented by 由...發明be used for 被用于...by accident 偶然地fall into 落入take place 發生without doubt 毫無疑問all of a sudden 突然in this way 以這種方式at a low price 以低價translate into 翻譯成dream of 夢想come up with 想出be full of 充滿be similar to 與...相似be made of/from 由...制成核心句型1. 被動語態疑問句When/Where/Who was/were + 主語 + 過去分詞... When was the telephone invented Who was it invented by Where was tea first produced 2. 被動語態陳述句主語 + was/were + 過去分詞 + (by...)Paper was invented in China.These toys are made by hand.3. 其他常用句型It is believed that... 人們相信...It is believed that tea was discovered by accident.There is no doubt that... 毫無疑問...There is no doubt that computers have changed our lives.語法聚焦1. 一般過去時被動語態結構:was/were + 過去分詞用法:強調動作的承受者不知道或不需要指出動作的執行者例句:The first computer was built in 1946.These books were written for children.2. 被動語態與主動語態的轉換主動:主語 + 動詞 + 賓語被動:賓語 → 主語 + be + 過去分詞 + by + 主語例句:Bell invented the telephone. (主動)The telephone was invented by Bell. (被動)3. be made of/from的區別be made of:能看出原材料The desk is made of wood.be made from:看不出原材料Paper is made from wood.4. 被動語態中的情態動詞結構:情態動詞 + be + 過去分詞例句:The rules must be obeyed.This problem can be solved easily.1.—Tu Youyou received the Nobel Prize for her of artemisinin (青蒿素).—And she was the first Chinese who won the prize in science.A.design B.thought C.invention D.discovery2.—________ —They were invented by Julie Thompson.A.When were they invented B.Who were they invented byC.Where were they invented D.What were they used for3.—Oh, I love spring so much.—So do I. The flowers so sweet.A.feel B.smell C.taste D.sound4.Do you know who America A.found B.invented C.discovered D.looked for5.Look! There deer with the tourists on Yinhe Square.A.are a number of; playing B.are a number of; playC.is a number of; playing D.is a number of; play6.The cheese doesn't______ good. Why don't we go to buy some fresh cheese Sounds great!A.see B.find C.sound D.taste7.A story _____ by Granny yesterday.A.was told us B.was told to usC.is told us D.told us8.—Can we pick some apples to eat —I'm afraid not. They look green and they might be.A.sour B.salty C.sweet D.crispy9.We ________ English in class but Chinese ________by us all day.A.speak; speak B.speak; is spokenC.is spoken; speak D.is spoken; is spoken10.Two bridges over the river five years ago in our city.A.build B.built C.were built D.are built11.My little brother is a tidy boy. He always keeps his room .A.clean B.to clean C.cleaning D.cleaned12.—I'm sorry I've taken your dictionary because they have the same color.—It doesn't matter.A.at once B.by mistake C.in general D.as well13.Jenny didn't go to bed her mother came home last night.A.as soon as B.if C.while D.until14.—He always appears to .—That's because he's really knowledgeable and experienced.A.make an effort B.have a point C.pull together D.take place15.Everybody deeply after they heard the story.A.moves B.moved C.is moved D.was moved16.—I apologize for having made a mess in your bathroom.— . After all, you didn't mean it.A.You're welcome B.It's my pleasureC.Don't mention it D.I can't agree more17. is boiling the water. It must be Mr. Wang.A.Somebody B.Nobody C.Something D.Nothing18.Was a car invented ________ March 4, 1876 A.on B.in C.at D.of19.Stephen Hawking, a great scientist, had a strong will (意志). His serious illness never him living a meaningful and colorful life.A.learned; from B.protected; fromC.saved; from D.stopped; from20.My coat is made _____ wool and silk.A.to B.for C.from D.of21.In our school library, there a number of books and the number of them _______ growing larger and larger,A.is; are B.has; is C.are; is D.have; are22.Tea, the most popular drink in the world, by accident in China.A.discovered B.is discoveredC.will be discovered D.was discovered23.—Jim, how do your parents like country music — my dad my mom like it. They both like country music.A.Either; or B.Not only; but alsoC.Neither; nor D.Both; and24.—I still don't know what while I was away from home.—You'll know it all someday, I believe.A.had happened B.would happen C.has happened D.happened25.—Thank you for supporting the volunteer project.— .A.All right B.My pleasureC.Never mind D.It doesn't matter26.Steve Jobs was full of —always coming up with new ideas which led to great changes in society.A.instruction B.invitation C.introduction D.invention27.Mo Yan is famous now, but he a true son of soil(土地).A.keeps B.gets C.remains D.may be28.There a number of books in the library and the number of them increasing.A.has; is B.have; are C.are; is D.is; are29.Look at the picture. The top five TV plays in it.A.list B.are listed C.will list D.will be listed30.This singer sang many songs, some of Liu Huan's.A.include B.including C.without D.beside31.Can you tell me ________ the train was invented A.what B.who C.when D.which32.He got to school late. he got up late.A.This is because B.This is whyC.Because of D.Why did33.Who was the book________ A.write B.wrote C.written D.written by34.—What have you learnt after three years' study in China, Maria —I was taught knowledge good manners.A.either; or B.not only; but alsoC.neither; nor D.not; but35.Over the past 38 years, he has planted trees on a sandbar (沙洲) of the Brahmaputra River and has it into a forest.A.divided B.put C.turned36.Ice can be _____ water.A.turn into B.turn to C.turned into D.turned to37.—Could you please help me carry the heavy bag — .A.It's a pleasure B.With pleasureC.You're welcome D.It doesn't matter38.The population of Liupanshui is over 3 million.(選擇意思相近的選項)A.less than B.almost C.nearly D.more than39.These model cars in China in 2018.A.are made B.were made C.made40.Nowadays China for its new "four great inventions"—shared bicycles, electronic payment, high-speed railways and online shopping.A.was knowing B.was known C.is knowing D.is known41.The cheese cake so good that I can't wait to eat it.A.tastes B.feels C.sounds D.smells42.—Mum, what are you cooking in the kitchen It So good.—Fried noodles.A.smells B.tastes C.sounds43.—What ________ him last night —He had an accident on the way home.A.Took place to B.took place for C.happened to D.happened for44.The Ox ford Castle _____by Henry(1154—1189). It is in very good condition now.A.built B.was built C.has been built D.is built45.—Wow! Your hat looks so beautiful.—It by my aunt. She is working in China.A.has bought B.had bought C.is bought D.was bought46.—Who's the little girl in the photo, Laura —It's me. This photo when I was five.A.is taken B.takes C.was taken D.took47.A little monkey might feel sad because of having a new baby sister or brother!—Yeah. I didn't know that I saw the film Born in China.A.if B.until C.since D.although48.—Would you please come to the dancing party with me tonight — I suppose we shall have a wonderful night!A.Never mind B.Have a good timeC.Not exactly D.With pleasure49.Earthquakes always happen , so it is difficult to know when they come.A.hopefully B.suddenly C.usually D.luckily50.—The number of tourists over 33 million this year.—Yes. A large number of tourists so far because of the new look of our city.A.is; have come B.is; has comeC.are; has come D.are; have come參考答案及試題解析1.D【解析】句意:——屠呦呦由于發現青蒿素而獲得諾貝爾獎。——她是中國在科學方面獲得諾貝爾獎的第一人。design設計;thought思想;invention發明;discovery發現, 青蒿素本身是存在的,由屠呦呦發現的,故選D。【點評】考查名詞辨析。根據上下文的聯系確定所使用的名詞。2.B【解析】句意:——他們被誰發明的?——他們是被 Julie Thompson 發明的。根據 Julie Thompson 可知問的是誰,A,什么時候被發明,B,被誰發明,C,在哪里被發明,D,用來作什么,故選B。【點評】考查疑問副詞的辨析,注意區分疑問副詞的用法。3.B【解析】句意:——哦,我非常喜歡春天。——我也是。這花聞起來很香。feel摸起來;smell聞起來;taste嘗起來;sound聽起來,根據so sweet很香,是味道,可知是聞起來,故選B。【點評】考查動詞辨析。根據上下文的聯系確定所使用的動詞。4.C【解析】句意:你知道誰發現的美洲嗎?find,找到,偶然發現,碰到;invention發明,discover發現, 是發現客觀事物的存在,發現已存在而不為人所知的事情 ;look for尋找,故選C。【點評】考查動詞辨析。根據句意和語境確定所使用的動詞。5.A【解析】句意:看!銀河廣場上有許多鹿在和游客玩耍。look,看,現在進行時的標志詞。表示動作正在進行。there be+名詞+v-ing表示有某人或某物正在做什么。a number of,許多大量,其后跟可數名詞的復數形式,deer可數名詞的復數形式,系動詞要用are;play,玩耍,根據look,可知時態為現在進行時,play-playing,故選A。【點評】考查there be結構。注意there be+名詞+v-ing的含義及構成。6.D【解析】句意:這些奶酪吃著不好。我們為什么不能去買些新鮮的奶酪呢?see看見;find發現;sound聽起來;taste吃起來,good形容詞,系動詞后跟形容詞,sound,taste系動抽,cheese是食物,可知此處是吃起來,故選D。【點評】考查動詞辨析。根據上下文的聯系確定所使用的動詞。7.B【解析】句意:昨天奶奶給我們講了一個故事。根據 yesterday,可知是一般過去時態,固定搭配,tell sth to sb,告訴某人某事,故事做主語,用被動語態,was told to sb,故選B。【點評】考查一般過去時態的被動語態,注意固定搭配在句子中的用法。8.A【解析】句意:——我們能摘些蘋果吃嗎?——我想不能。它們看起來是綠色的,并且可能是澀的,酸的。sour酸的,澀的;salty咸的;sweet甜的;crispy酥脆的,故選A。【點評】考查形容詞辨析。根據上下文的聯系確定所使用的形容詞。9.B【解析】句意:我們在課上說英語但是我們整天都在說漢語。speak English,說英語,speak Chinese,說漢語,Chinese做主語時句子用被動語態be spoken,故選B。【點評】考查一般現在時態主動語態和被動語態,注意動詞主動和被動形式的變化。10.C【解析】句意:我們城市河上的兩座橋是在五年前修建的。根據時間狀語five years ago,可知句子時態是一般過去時,句子主語和謂語之間是被動關系,這里是一般過去時的被動語態,was/were+done,主語two bridges是復數名詞,系動詞用were,故選C。【點評】考查一般過去時的被動語態。根據時間狀語確定時態,根據主語和謂語的主動和被動關系確定語態。11.A【解析】句意:我弟弟是個整潔的男孩。他總是保持房間干凈。keep sth+形容詞,讓某物保持某種狀態。clean,形容詞,干凈的,故選A。【點評】考查形容詞clean的基本含義及用法。注意clean即可做形容詞也可做動詞。12.B【解析】句意:——很抱歉我錯拿了你的詞典因為它們顏色相同。——沒關系。at once立刻,馬上;by mistake錯誤;in general通常;as well也。根據 because they have the same color ,可知是錯拿了詞典,故選B。【點評】考查連詞辨析。根據上下文的聯系確定所使用的連詞短語。13.D【解析】句意:昨天晚上珍妮直到母親回家才睡覺。as soon as,一……就……;if,如果;while,當……時候;until,直到,not...until...,直到……才……,故選D。【點評】考查連詞辨析。注意固定短語not...until...的使用。14.B【解析】句意:——他似乎總能說到點子上。——那是因為他真的有知識和經驗。make an effort努力;have a point有道理;pull together齊心協力;take place發生,根據 That's because he's really knowledgeable and experienced. 可知他的話有道理,故選B。【點評】考查短語辨析。根據上下文的聯系確定所使用的短語。15.D【解析】句意:聽到這個故事后每個人都被深深感動了。根據朱從句時態的一致可知此處是一般過去時,句子主語和謂語之間是被動關系,可知此處是一般過去時的被動語態was/were+done,故選D。【點評】考查一般過去時的被動語態。根據上下文的聯系確定時態,根據主語和謂語的主動和被動關系確定語態。16.C【解析】句意:——我為把你的浴室弄地一團糟向你道歉。——不用提了。畢竟,你不是故意的。 You're welcome 是感謝的答語。It's my pleasure。感謝的答語。Don't mention it。道歉答語。I can't agree more. 我再同意不過了 。贊同某事,根據 I apologize for having made a mess in your bathroom. 可知是對道歉的回答,故選C。【點評】考查情景交際。根據上下文的聯系和語境確定所使用的選項。17.A【解析】句意:某人正在燒水。那一定是王先生。somebody某人,用在肯定句;nobody沒有人,用在否定句;something某物,nothing沒有東西,根據 It must be Mr. Wang,可知指某人,故選A。【點評】考查不定代詞辨析。根據上下文的聯系確定所使用的代詞。18.A【解析】句意:汽車在1876年三月四號被發明嗎?具體某一天的前面用介詞on,故選A。【點評】考查介詞,注意介詞的用法。19.D【解析】句意:偉大的科學家斯蒂芬霍金有強烈的意志力。他的重病從未阻止他過上有意義和豐富多彩的生活。A 學習;B 保護;C 拯救;D 阻止。根據題干中的His serious illness 與living a meaningful and colorful life的含義可知此句需要動詞短語“阻止某人做某事”,故選D。【點評】考查短語辨析。注意固定短語stop sb from doing sth的含義及構成。20.D【解析】句意:我的大衣由羊毛和絲綢制作的。固定搭配,be made of,由……制成,能看出原材料,be made from,由……制成,看不出原材料;衣服是看得出材質的,因此用介詞of,故選D。【點評】考查固定搭配,注意介詞在固定搭配中的不同用法。21.C【解析】句意:在我們學校圖書館有很多書并數量的數量越來越大。There be有……,be的單復數形式根據be后名詞的單復數確定, 根據a number of books,可知第一空的系動詞用are, the number of+名詞復數做主語時,謂語動詞用單數,故選C。【點評】考查主謂一致。掌握a number of和the number of的區別。22.D【解析】句意:茶,世界上最受喜愛的飲料,在中國被偶然發現。茶的發現是在過去,句子時態是一般過去時,句子的主語和謂語之間是被動關系,此處是一般過去時的被動語態,was/were+done,tea不可數名詞,系動詞用was,故選D。【點評】考查一般過去時的被動語態。根據上下文的聯系確定句子時態,根據主語和謂語的主動和被動關系確定語態。23.B【解析】句意:——吉姆,你父母認為鄉村音樂怎么樣呢?——不僅我父親而且我母親也很喜歡。他們兩人都喜歡鄉村音樂。either...or...或者……或者……; not only...but also...不僅.......而且……;neither...nor...既不……也不……;both...and...兩者都,根據 They both like country music. 可知父母兩人都喜歡鄉村音樂,故選B。【點評】考查連詞辨析,根據上下文的聯系確定所使用的連詞。24.D【解析】句意:——我仍舊不知道當我在離開家時發生了什么。——我相信總有一天你會知道的。根據主從句時態的一致,從句時態是過去時,可知此句的時態是過去時,故選D。【點評】考查一般過去時。根據上下文的聯系確定句子時態。25.B【解析】句意:——謝謝你支持這個志愿者項目。——不客氣。All right.是對方勸告或建議的答語。Thank you的答語My pleasure.或It's my pleasure。Never mind. 和 It doesn't matter.是道歉的答語。故選B。【點評】考查情景交際。要掌握常用的交際用語。26.D【解析】句意: 史蒂夫·喬布斯充滿了發明——經常能想起新的想法導致社會發生很多變化。根據 always coming up with new ideas which led to great changes in society. 可知他有很多發明,instruction說明;invitation邀請;introduction介紹;invention發明,故選D。【點評】考查名詞辨析。根據上下文的聯系確定所使用的名詞。27.C【解析】句意:莫言現在很有名,但是他仍舊是農民。莫言原來就是一個農民作家,現在有名了,仍然是農民。keep保持,行為動詞后面跟名詞作賓語;get變成;remain仍然是,保持不變,may be或許,大概,remain系動詞,后面跟名詞作表語,指狀態。故選C。【點評】考查動詞辨析。根據上下文的聯系確定所使用的動詞。28.C【解析】句意:圖書館里有許多書,而且數量在增加。a number of+可數名詞復數,表示許多,大量。在there be句型中作主語,謂語動詞be用復數;the number of意為“……的數量”,作主語時,謂語動詞用單數。故選C。【點評】考查主謂一致。注意區分the number of與a number of的基本含義及用法。29.B【解析】句意:看這張圖片。最好的五大電視劇都列在里面了。根據主語和謂語之間的關系可知句子是被動語態,根據 Look at the picture. 可知現在五大電視劇被列在里面了。可知句子時態是一般現在時,一般現在時的被動語態is/am/are+done,主語TV plays是復數名詞,系動詞用are,故選B。【點評】考查一般現在時的被動語態。掌握一般現在時的被動語態is/am/are+done。30.B【解析】句意:這位歌手唱了很多歌,包括劉歡的一些歌。A:包含,動詞;B:包括,介詞;C:沒有;D:在旁邊;根據題干結合some of Liu Huan's推測設空處句子的句意是"那名歌手唱了許多歌曲,包括劉歡的一些歌.",由此判斷句子中缺少"包括"一詞,including是介詞,做狀語,進行補充說明,故選B。【點評】考查介詞including的基本含義及用法。注意include是動詞,including也是動詞include的現在分詞形式。31.C【解析】句意:你能告訴我什么時候火車被發明的嗎?A,什么,B,誰,C,什么時候,D,哪一個,根據time,可知對時間進行提問,用when,故選C。【點評】考查疑問副詞的辨析,注意根據句意選擇副詞。32.A【解析】句意:他上學遲到了這是因為他起晚了。A 這是因為;B 這是為何;C 因為,其后跟短語;D 為何。根據題干中的語句He got to school late與he got up late.的含義可知,后者是前者的原因,this is because,表語從句,故選A。【點評】考查原因狀語從句的基本構成。33.D【解析】句意:這本書是被誰寫的?write,寫,過去分詞,written,被誰寫,be written by sb,sb用who來提問,故選D。【點評】考查被動語態,注意被動語態中動詞過去分詞的形式,根據題意還要用適當的介詞。34.B【解析】句意:——瑪利亞,在中國學習三年后你學到了什么?——教給我的不僅是知識還有禮貌。either...or...或者……或者……;not only...but also...不僅……而且……;neither...nor...既不……也不……;not...but...不是……而是……,根據 What have you learnt after three years' study in China, Maria 可知答語是學到的東西,可知他學習的有知識,有禮貌,故選B。【點評】考查連詞辨析。弄清每個短語意思,根據上下文的聯系確定所使用的短語。35.C【解析】句意:在過去的38年,他在雅魯藏布江的沙洲種樹,把它變成了一片森林了。divide...into...把......分成......; put...into...把......翻譯成,把……放入……;turn...into...把……變成……,根據 Over the past 38 years, he has planted trees on a sandbar (沙洲) of the Brahmaputra River可知是把沙洲變成了森林,故選C。【點評】考查短語辨析。根據上下文的聯系確定所使用的短語。36.C【解析】句意:冰能被變成水。固定搭配,turn into,變成,turn to,轉向,情態動詞后的被動語態,can be done,turn的過去分詞,turned,故選C。【點評】考查情態動詞后面的被動語態,注意固定搭配的用法。37.B【解析】句意:——你能幫我提這個重包嗎?——這是我的榮幸。 It's a pleasure 別客氣。感謝的答語。;With pleasure.這是我的榮幸。別人要求為別人做事時,樂意去做的答語。You are welcome.不客氣。感謝的答語。It doesn't matter.沒關系。道歉的答語。故選B。【點評】考查情景交際。要掌握常用的交際用語。38.D【解析】句意:六盤水的人口超過3百萬。over超過;less than少于;almost幾乎;nearly幾乎;more than多于,故選D。【點評】考查同義詞的使用。弄清所給短語意思,從所給選項中選出正確答案。39.B【解析】句意:這些汽車模型是在2018年在中國制造的,be made in,在……制造,根據時間狀語in 2018,可知句子是一般過去時。故選B。【點評】考查一般過去時的被動語態。根據時間狀語確定時態,根據主語和謂語的主動和被動關系確定語態。40.D【解析】句意:現在中國因為新的“四大發明”——共享單車,電子支付,高鐵和網購而出名。主語和謂語之間是被動結構,這是客觀事實,句子時態是一般現在時,此處是一般現在時的被動語態。be known for,因為……而出名,固定短語,故選D。【點評】考查一般現在時的被動語態。注意be known for是固定短語。41.D【解析】句意:這個奶酪蛋糕聞起來太好了以致于我迫不及待要吃了。taste,嘗起來;feel感覺;sound聽起來;smell聞起來,根據主語是食物,和 I can't wait to eat it 我還沒吃,所以是聞起來好,故選D。【點評】考查動詞辨析。根據語境和上下文的聯系確定所使用的動詞。42.A【解析】句意:——媽媽,你在廚房做什么飯?——炒面。根據 Mum, what are you cooking in the kitchen 可知是做飯的香味。smell聞起來;taste嘗起來;sound聽起來,故選A。【點評】考查動詞辨析。根據上下文的聯系確定所使用的動詞。43.C【解析】句意:——他昨晚發生了什么事?——他在回家的路上發生了事故。發生,happen,指的是碰巧發生的事,take place,發生,指的是安排的事,發生在某人身上,happen to sb,故選C。【點評】考查動詞和介詞的用法,注意動詞的區分。44.B【解析】句意:牛津城堡是被亨利建造的。現在狀況良好。根據 1154—1189,可知是過去建造的,用一般過去時態的被動語態,be built,主語是單數用was,故選B。【點評】考查一般過去時態的被動語態,注意動詞的形式。45.D【解析】句意:——喔,你的帽子看起來特別漂亮。——它是我姑姑買的。她在中國工作。句子的主語和謂語之間是被動關系,句子用被動語態。帽子是過去買的,可知句子時態是一般過去時,此處是一般過去時的被動語態。故選D。【點評】考查一般過去時的被動語態。根據上下文的聯系確定句子的被動語態。46.C【解析】句意:——勞拉,相片里的小女孩是誰?——是我。這張照片是在我五歲時照的。根據 when I was five,可知句子時態是一般過去時,主語和謂語之間是被動關系,可知此處是一般過去時的被動語態,故選C。【點評】考查一般過去時的被動語態。根據上下文的聯系確定時態,根據主謂關系確定主動和被動語態。47.B【解析】句意:—— 一個小猴因為有新生的妹妹或弟弟可能感到傷心。——是的。我直到看到電影《我們誕生在中國》才知道。if如果;until直到;since自從;although雖然,not...until....直到……才……,固定短語,故選B。【點評】考查連詞辨析。根據上下文的聯系確定句子中所使用的連詞。48.D【解析】句意:——你今晚和我一起參加舞會好嗎?——很樂意。我想我們會有一個美好的夜晚。Never mind不要緊。Have a good time.玩得高興。Not exactly.不完全是。With pleasure.很樂意。很榮幸。根據 Would you please come to the dancing party with me tonight 可知答語是想去或不想去。根據 I suppose we shall have a wonderful night! 可知答語是想去。故選D。【點評】考查情景交際。根據上下文的聯系確定所使用的選項。49.B【解析】句意:地震經常突然發生,因此很難知道它們什么時候發生。根據 so it is difficult to know when they come可知它們是突然發生的,hopefully有希望地;suddenly突然地;usually通常;luckily幸運地,故選B。【點評】考查副詞辨析。根據上下文的聯系確定所使用的副詞。50.A【解析】句意:——今年游客的數量超過了3千3百萬。——是的。因為我們城市的新面貌,到目前為止大量的乘客來到這里。the number of+名詞復數作主語時謂語動詞用第三人稱單數,a large number of+名詞復數作主語時謂語動詞用復數結構,故選A。【點評】考查主謂一致。掌握the number of+名詞復數,a number of+名詞復數,作主語時謂語動詞的形式。21世紀教育網(www.21cnjy.com) 展開更多...... 收起↑ 資源預覽 縮略圖、資源來源于二一教育資源庫