【正文】 因此，表因果；if如果，表?xiàng)l件；but但是，表轉(zhuǎn)折；as由于，表原因。根據(jù)句意，空前說(shuō)…really old，空后說(shuō)want to keep them，前后為轉(zhuǎn)折解析：C【詳解】句意：這些玩具真的很舊，但是我仍然想要保存他們。because因?yàn)椋籾nless除非；but但是，表轉(zhuǎn)折；if如果。故選D。though雖然，盡管，可以引導(dǎo)讓步狀語(yǔ)從句；but 但是，表示轉(zhuǎn)折；so 因此，所以，表示因果關(guān)系；or 或者，否則。好吧。本題為固定句型“祈使句，and/or+句子”，其中祈使句相當(dāng)于“條件”，和后面的句子之間存在“承接關(guān)系”時(shí)，用連詞and。根據(jù)句意可知，此句是是表示轉(zhuǎn)折的并列句，此空是否則的意思，此空故填or，故選D。and而且，so所以，but但是，or否則。分析句子可知，此處構(gòu)成“祈使句+ and/or +簡(jiǎn)單句”結(jié)構(gòu)，又因?yàn)榇颂幈硎尽胺駝t，要不然”的含義。so所以；or或者；and和；but但是。根據(jù)題干“這件棕色的夾克衫很好看，但是我穿上不好看”可知，句子前后是轉(zhuǎn)折關(guān)系，故選C。故選B?？疾檫B詞。A. so因此；B. but但是；C. or或者；D. because因?yàn)椤. for 因?yàn)?表示原因 B. or 或者 C. but但是 D. so因此，所以。本題前后兩句是因果關(guān)系，前一句是因，后一句是果，需用so連接。and而且，表示遞進(jìn)關(guān)系；but但是，表示轉(zhuǎn)折關(guān)系；so所以，表示結(jié)果；or否則，表示警告。考查連詞辨析。解析：B【詳解】句意：你最好6點(diǎn)半的時(shí)候喊醒Tom，否則他比賽就要遲到了。考查連詞。ll never make progress．A．so B．or C．a(chǎn)nd D．but15．Those who want to lose weight have to exercise every day, _________ they might get fat again.A．though B．if C．so that D．or16．Don’t be crazy about puter games, ________ your parents will be worried.A．a(chǎn)nd B．or C．but D．so17．2018年上海崇明二模Please dial 120 immediately,_______ the old man may die soon.A．a(chǎn)nd B．or C．but D．so18．Do you want to go now, would you like to leave later?A．but B．or C．a(chǎn)nd D．so19． Thomas, spend less time on puter games。 ______you will do worse in your studies. All right.A．so B．but C．or D．a(chǎn)nd20．It’s hot today, ______we want to go swimming in the river.A．though B．but C．so D．or21．Many people aren’t attracted to this project, ________ I want to know more about it.A．a(chǎn)s B．or C．until D．but22．We will never see Kobe play another basketball game, ________we will always remember him.A．because B．unless C．but D．if23．The toys are really old, ________ I still want to keep them.A．or B．a(chǎn)nd C．but24．Hawking is no longer with us, he will continue to inspire the world.A．so B．if C．but D．a(chǎn)s25．I really want to have a pet dog,_____ my mother disagrees.A．but B．a(chǎn)nd C．or D．so26．I like dancing, ______ I don’t have enough time to practice it.A．or B．so C．but D．because27．It’s not always safe to pay over the Internet, you should be careful.A．so . B．a(chǎn)fter . C．because . D．a(chǎn)s soon as28．Air pollution is being more and more serious, actions must be taken to stop it.A．so B．but C．or D．until29．– How do you like this soap opera?– I think it’s very boring, ________ my mother always wants to watch it.A．if B．but C．or D．So30．A snake bit him ___________ he went to see a doctor at once.A．if B．where C．because D．so31．The dress is really beautiful，__________ it is too small for me.A．or B．but C．so D．a(chǎn)nd32．The dress is really nice, _________it doesn’t look good on me .A．for B．so C．but D．or33．Alice likes swimming, ________ there is no swimming pool near her home.A．a(chǎn)nd B．but C．unless D．because34．Romantic edies have not received a lot of love at the box o