连词 单项填空 请从每题所给的选项中选出可以填入空白处的最佳答案。 ( )1.[2019·黑龙江绥化]I think you'll miss the train _____ you hurry up. A．if B．and C．unless ( )2.[2019·贵州毕节]Bill，stop smoking，_____ you'll get better soon. A．but B．after C．or D．and ( )3.[2019·甘肃武威]_____ it rained a lot，we enjoyed our holiday. A．Although B．Because C．Unless D．However ( )4.[2019·山东菏泽]_____ my grandpa is over 80 years old，he still looks strong and healthy. A．Although B．Because C．Unless ( )5.[2019·内蒙古包头]Give me your email address，_____ I'll send you the form. A．or B．and C．but D．nor ( )6.[2019·辽宁铁岭]Mr Smith knows a lot about China _____ he has never been to our country. A．although B．until C．if D．since ( )7.[2019·辽宁葫芦岛]As students，we must study hard._____ ，we should care for our health. A．At the same time B．On the one hand C．All in all D．In the end ( )8.[2019·辽宁葫芦岛]The football fans cheered _____ they heard the exciting news. A．even though B．in order that C．as soon as D．as long as ( )9.[2019·广西河池]I know her face_____ I can't remember her name. A．and B．but C．so D．or ( )10.[2019·河南]Before you ask someone for help，find out _____ he is the right person for your problem. A．since B．that C．whether D．unless ( )11.[2019· 山西]You can't decide whether or not you like something until you try it，_____ it's important to try something new. A．but B．or C．so ( )12.[2019·云南昆明]_____we continue to kill elephants for their ivory，we humans will lose them in the end. A．If B．Before C．Until D．Although ( )13.[2019·四川凉山]In summer，food will go bad quickly _____ we put it into a fridge. A．if B．unless C．as soon as D．when ( )14.[2019·山东临沂]A break between classes is a good time for students to play sports and talk with their classmates.So it _____ helps with students' health，_____ improves their social skills. A．either；or B．neither；nor C．not only；but also ( )15.[2019·山东临沂]A recent survey shows that 44 percent of Americans want to use self?driving cars，_____ 34 percent believe that they will make the roads more dangerous. A．although B．because C．if ( )16.[2019·江苏扬州]Facial recognition(人脸识别)technology is widely used for payment._____ ，we needn't enter the passwords any more. A．For example B．As a result C．What's worse D．What's more ( )17.[2019·福建]_____ it's a public holiday today，some firefighters in our city are still on duty. A．Although B．Once C．If ( )18.[2019·江苏宿迁]Santaishan Forest Park is _____ beautiful that it has become a hot tourist attraction. A．so B．very C．such D．quite ( )19.[2019·黑龙江哈尔滨]—Which sport do you prefer，volleyball _____ basketball? —I prefer volleyball. A．or B．and C．but ( )20.[2016·上海]The flight was delayed by the storm，_____ the passengers had to wait at the airport. A．but B．or C．so D．for ( )21.[2016·陕西]The dress is really ... ...
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