课时训练（十二）Unit4（八下）（限时:30分钟）.单项选择1.Have you decided ?Yes, tomorrow morning.A.when will you leaveB.How will you leaveC.when to leaveD.how to leave2.2018滨州 I swim here?Im sorry. Children swim alone here. Its very dangerous.A.Must; cantB.May; mustC.Can; mustntD.Cant; can3.2018天津 Must I come here before 6:30 tomorrow?No, you. There will be plenty of time.A.mustntB.cantC.couldntD.neednt4.2018扬州 If I want to be an astronaut, how will I get to be one?You do well in school and tame your fears.A.mayB.canC.mustD.could5.Here is the book. First, it and then tell me what you think of it.A.look intoB.look throughC.look upD.look after6.We are going for a picnic. Ill call Wendy to make sure.A.why to startB.which to startC.what to startD.when to start7.Please hold on to your dream one day it comes true.A.ifB.untilC.unlessD.though8.I cant start this online tour. Can you show me .A.what to doB.what to do itC.how to doD.how should I do it.9.Dont try to do everything at once. Take it a bit .A.at timesB.at that timeC.at the same timeD.at a time10.Thanks for listening to my problem and giving me your advice, Amy. Thats what friends are for.A.My pleasureB.With pleasureC.Never mindD.Its nice of you.2018江西完形填空There are purple clothes, purple handbags, purple bicycles, purple furniture, even purple computers! So purple is one of the most11 colors today. But in the past, purple was a very expensive and unusual color. Lets take a look at the rich12 of the color purple.Some scientists believe that the first plants to appear on Earth over 500 million years ago13 looked purple, not green. Plants today are green because14 use green chlorophyll（叶绿素） to produce energy.15 these early plants probably used something called retinal, which is a dark purple color.During the time of the Roman Empire （37BC476 AD）, it was very16 to make purple dye（染料）. The dye came from sea snails（海螺）. But 10,000 dead sea snails17 you just one gram（克） of purple dyeas well as a very bad smell! This18 purple dye was called Tyrian purple, and it was the preferred19 of emperors.In 16th-century England, purple was20 for the kings family members. Queen Elizabeth Is clothes were purple, but ordinary people were not allowed to21 the color.In 1856, William Perkin, an 18-year-old22 student, noticed something strange while doing an experiment（实验）. The chemicals（化学药品） he used to clean his instruments23 with the chemicals he used in his experiment and produced a bright purple color. This24 led Perkin to start a company using this chemical mixture to make purple dye. The dye was much25 than sea snail dye. Thanks to Perkin, now anyone can afford to wear purple clothes.11.A.peacefulB.popularC.excitingD.serious12.A.historyB.style C.researchD.product13.A.graduallyB.especiallyC.exactly D.probably14.A.others B.theyC.weD.some15.A.AndB.SoC.But D.Until16.A.dangerousB.commonC.difficult D.strange17.A.gotB.passedC.wastedD.cost18.A.basicB.harmful C.special D.perfect19.A.colorB.smell C.plant D.animal20.A.even B.never C.seldomD.only21.A.wear B.sellC.changeD.make22.A.geographyB.science C.art D.math23.A.compared B.mixed C.collected D.kept24.A.survey B.suggestionC.discoveryD.exam25.A.healthierB.thicker C.cheaper D.darker.阅读理解Do the British really get together every afternoon at 4 to sit and drink several cups of tea? Ask any of my German students and they will tell you “YES!”But its simply not true.We drink over 150 million cups of tea a day in Britain, but there is no special time for it. “Tea” is widely used as a name for the evening meal. This is more common in Scotland and the north of England but you can hear it all over the country. Usually it is the main meal of the day, eaten between 5 and 7. So, “teatime” refers to（指的是）the meal and not the drink. In the south, the evening meal is often called dinner, however, dinner in the north is the midday meal. In general:North: BreakfastDinnerTeatimeSouth: BreakfastLunchDinnerWhat about tea breaks? Surely this must be a special time for tea? Wrong again, Im afraid. Tea breaks are just an opportunity（机会） to have a rest from work for around 10 minutes. In this time you can drink whatever you like （which of course includes tea）. This is usually with a small snack, like biscuits. The best time for a tea break is around 11 a.m. or around 3 p.m.But what about tea rooms? Can I drink tea there? Yes! A tea room is the perfect place to go with friends and family to enjoy tea, cakes and sandwiches. This is known as afternoon tea and is usually saved for special occasions（场合） such as a birthday party.Teatime, tea breaks, afternoon teahow could you possibly get muddled up?26.According to Paragraph 2, we can know that