【正文】 ome children prefer to eat sweet chocolate _____ it’s not good for their health.A．because B．if C．when D．though【答案】D【解析】【詳解】句意：有些孩子喜歡吃甜巧克力，雖然這對(duì)他們的健康不好?？疾閺膶龠B詞辨析。A. because因?yàn)?；B. if假如；C. when什么時(shí)候；D. though雖然、盡管。根據(jù)句子前后意思的對(duì)比，可知孩子喜歡吃甜巧克力和對(duì)健康不好兩者構(gòu)成一種讓步關(guān)系，表示盡管知道這樣做不好但仍然這樣去做，結(jié)合選項(xiàng)只有although有這種含義，后面引導(dǎo)一個(gè)讓步狀語從句，故答案選D。41．________ jeans were invented over 100 years ago, they39。re still in fashion today.A．Because B．If C．Although D．Since【答案】C【解析】【詳解】句意：盡管牛仔褲在100多年前就被發(fā)明了，現(xiàn)在他們?nèi)匀缓芰餍?。考查連詞辨析。A. Because 因?yàn)椋?B. If 如果； C. Although 盡管； D. Since自從。結(jié)合句意，牛仔褲被發(fā)明了100多年，現(xiàn)在仍然流行?？芍昂蟊硎咀尣疥P(guān)系，故用連詞although，故選C?？键c(diǎn)：考查連詞的用法。42．_____ they are very tired, they feel happy because they’ve finally finished their project.A．So B．Although C．If D．But【答案】B【解析】【詳解】句意：盡管他們很累，他們感到高興，因?yàn)樗麄兘K于完成了他們的項(xiàng)目。考查連詞辨析。A. So 因此；B. Although盡管；C. If如果；D. But但是。分析句意可知，他們雖然很累，但很快樂，前半句是讓步狀語從句，用Although。答案選B。43．You’d better take the map with you ________ you won’t get lost.A．a(chǎn)s long as B．a(chǎn)s soon as C．now that D．so that【答案】D【解析】【詳解】句意：你最好帶上這張地圖，目的是為了不迷路?？疾檫B詞辨析。A. as long as只要，引導(dǎo)條件狀語從句；B. as soon as一……就……，引導(dǎo)時(shí)間狀語從句；C. now that既然，表原因；D. so that以便，引導(dǎo)目的狀語從句或結(jié)果狀語從句。根據(jù)句意語境，帶著地圖的目的就是防止迷路，本題是目的狀語從句，故選D。44．Chen Wei isn’t at school today ________ he is taking a robot petition in Shanghai.A．so B．because C．before D．if【答案】B【解析】試題分析：句意：陳煒今天不在學(xué)校因?yàn)樗谏虾⒓訖C(jī)器人競(jìng)賽。so所以；because因?yàn)?；before在……之前；if如果。所以選B?？键c(diǎn)：考查連詞。45．It was the middle of the night _____the sound of the piano woke me up.A．because B．if C．when D．a(chǎn)lthough【答案】C【解析】【詳解】句意：正是半夜鋼琴聲把我吵醒了。A. because因?yàn)椋籅. if如果；C. when 當(dāng)……的時(shí)候；D. although盡管，雖然。根據(jù)下文the sound of the piano woke me 。根據(jù)題意，故選C。46．What a mess! The sharing bikes are thrown everywhere.Let’s collect and put them in the right place they can be used conveniently.A．unless B．so that C．because D．so long as【答案】B【解析】句意：——真是一團(tuán)糟！共享自行車到處都是?！屛覀儼阉鼈兪占饋矸旁诤线m的地方，這樣它們就可以方便地使用了。A. unless除非；B. so that以便；C. because因?yàn)椋籇. so long as只要。結(jié)合句意可知，此處是so that引導(dǎo)的目的狀語從句，答案為B。47．He didn’t go to school yesterday _______ he was ill.A．because B．because of C．if D．so【答案】A【解析】【詳解】句意：他昨天沒去上學(xué)，因?yàn)樗×?。本題的含義是昨天他沒有去上學(xué)，“他病了”應(yīng)該是他沒上學(xué)的原因，because后跟原因從句，because of后跟單詞或短語，if如果后接條件狀語從句，so因此。故選A。48．—Betty, do you know if Tony ______ the photo petition?—He will, if he ______ his project on Australia.A．enters。 finishes B．enters。 will finishC．will enter。 finishes D．will enter。 will finish【答案】C【解析】【詳解】句意：貝蒂，你知道托尼是否要參加攝影比賽？他會(huì)的，如果他完成了有關(guān)澳大利亞的課題。問句中if引導(dǎo)的是賓語從句，翻譯為是否，前者問的是將來；答語是由if引導(dǎo)的條件狀語從句，所以遵循主將從現(xiàn)的原則，所以if之后用一般現(xiàn)在時(shí)。所以答案選C。49．Has the meeting begun yet？Not yet． We have to wait everyone is here．A．a(chǎn)nd B．until C．or D．but【答案】B【解析】【詳解】考查連詞用法。句意：—會(huì)議已經(jīng)開始了嗎？—不，還沒有。我們必須等到大家都到齊了。and和；until直到；or或者、否則，but但是。根據(jù)題干可知我們得等到大家都到了，這里表示直到……時(shí)候用until．故選B．50．Today’s young people can’t live without smart phones. They keep their hands on the phones whenever they go, even while they_______meals.A．had B．will haveC．a(chǎn)re having D．were having【答案】C【解析】【詳解】句意：今天的年輕人沒有智能手機(jī)就活不下去。無論何時(shí)甚至在吃飯時(shí)他們都手里拿著手機(jī)?？疾閯?dòng)詞時(shí)態(tài)。while表示一段時(shí)間，后面使用進(jìn)行時(shí)態(tài)，主句是一般現(xiàn)在時(shí)，可知從句使用現(xiàn)在進(jìn)行時(shí)；故答案C。