高考英语一轮复习 Unit10 指导课时作业B卷（含解析） 北师大版.doc

unit 10 b卷一、阅读理解aits a goal for millions and millions of families every yearkeep the christmas spending within a certain amount，but can still afford the gifts that your loved ones will enjoy.never has this concern been greater in recent years than right now.even so，there are several things that you can do to help.hit the sales.no one wants to get up at four oclock in the morning and fight to get the best deal on black friday，and its surely very tough to pick up the courage and get out there in the cold for a good deal，but sometimesit can be well worth.many retailers(零售商)offer specials all through the dayand some even offer online black friday specials，so you may still be able to get a great deal on black friday.pay close attention to advertisements.once the christmas shopping season is coming，retailers hungry for business will do just about whatever to get you in the store.pay very close attention to weekly advertisements of sales among the major retailers and you may be lucky enough to find different prices for the same thing in different shops.shop online.some of us dont like running from store to store in order to get the best price on the perfect gift，and some of us dont like to go out in the cold at allthankfully for us，we can do online shopping.the world of online shopping lets people visit all the major retailers as well as some specialty stores that could only be found on the internet.customers can find exactly what they are looking for，at the best possible price without ever having to leave the house.with traditional christmas shopping consumers are sometimes limited to whats left in stock if they wait too long to get to a particular store.1the first paragraph implies that_.anowadays not many people can afford expensive giftsbrecently many people dont want to spend money on giftscchristmas is a time to make our loved ones enjoy their giftsdchristmas is a time to make us feel free to buy our loved ones gifts 2in the writers opinion，it is rewarding on black friday_.aif the weather is not very coldbif we dont have to fight for the best dealscif we dont have to get up earlydif we get what we want at a good price3the underlined word“specials”means“_”asome experts in shoppingbcertain things for especially low pricecsome kind of help for a certain customerdthings that can only be found on friday4we can have more choices_.aon black fridaybin a particular storecon the internet dfrom retailersbin the rush to get to school，you drop a piece of toast on the floor.do you throw it away or decide its still ok to eat? if youre like most people，you eat it.maybe you follow the“5second rule”，which claims foods are safe to eat if you pick them up within 5 seconds from dropping them.but you might want to think again.scientists now say that 5 seconds are all it takes for foods to become contaminated(被污染的)with enough bacteria to make you sick.bacteria are singlecelled organisms that can cause many kinds of illnesses.some kinds of bacteria can grow on food.if we eat foods on which these bacteria are growing，we can become sick.common symptoms include vomiting(呕吐)and diarrhea(腹泻)one of these foodborne bacteria is salmonella(沙门氏菌)it makes 1.4 million people sick every year.earlier this year,370 people became sick after eating peanut butter that had been contaminated with salmonella at the manufacturing plant.salmonella are often found in raw eggs and chicken.cooking kills these bacteria，which is why it is so important to cook eggs，chicken，and other foods thoroughly.being a good housekeeper is a second tip for preventing infection.if household surfaces arent washed thoroughly，they can support salmonella for weeks.but how long does it take these bacteria to attach to food? to answer that question，a team of scientists at clemson university in south carolina decided to test the 5second rule，using sandwich ingredients.first，they placed a known amount of salmonella cells on three surfaces：wood，tile，and carpet.they placed a slice of bread and a slice of bologna on each surface for 5,30，or 60 seconds.after just 5 seconds，both the bread and bologna picked up enough bacteria to make you sick.so，forget the 5second rule.if your toast lands on the floor，toss it out.5what is“a 5second rule”？aif you drop food on the ground，you cant eat it unless you pick it up within five seconds.bif you drop food on the ground，you cant eat it unless you pick it up five seconds later.cif you drop food on the ground，you can eat it even you pick it up five seconds later.dif you drop food on the ground，you can eat it at any time after you pick it up.6according to the text，which of the following statements about bacteria is not correct?athey can cause many kinds of illnesses.bthey are singlecelled organisms.cthey can grow on the surface of food.dthey only can be found on food.7how can people avoid the infection of salmonella?anever eat peanut butter.bnever eat chicken and eggs.cnever eat food unless theyre cooked.dwash hands before dinner.8why did the scientists at clemson university make the experiment?abecause they wanted to see if salmonella cells can grow on such kind of food.bbecause they wanted to see whether the 5second rule is correct or not.cbecause they wanted to find out the best food among the three.dbecause they wanted to see whether bacteria can make one sick or not.二、任务型读写阅读下面短文，根据所读内容在表格中的空白处填入恰当的单词。注意：每个空格只填一个单词。solar energy，as the name suggests，can be defined as the energy received from the sun.one of the biggest advantages of solar energy is that it is a renewable source of energy.it can be produced as long as the sun lasts，which is for next millions of years.therefore，solar energy can be truly called a longlasting source of energy.solar cells are easy to install and can be installed on rooftops，hence no extra space needed.solar energy can be produced in any part of the world，at any place where abundant sunlight is available.one of the most important environmental advantages of solar energy is that it is a nonpolluting source of energy as there are no emissions of carbon dioxide or other gases during the production of electricity.owing to the above mentioned reasons，solar energy does not pose any threat to the environment and hence，is also known as a clean source of energy.when thinking of the economic advantages of solar energy，one should note that solar energy production and use is free.there are no charges and bills to tend to !lastly，one of the other major benefits of solar energy is that this renewable energy is healthy，safe and easier to use at homes，offices or on larger scales.however，the cost of installation of the solar cell is quite high.solar energy cannot effectively work in cold countries.it is less effective in rainy seasons and cold climates.also，solar energy can only be produced during the day，and not at night.for large scale applications，larger area and higher investment is necessary，which may not be met easily.we conclude that solar energy is one of the best sources of energy.although not used in a large scale today，solar energy has the potential to produce more than thousand times of electricity that is currently required in the whole world.therefore，it is necessary to create awareness about the benefits of solar energy for a better future！topicsolar energy1._as the name suggests，it is the energy from the sun.advantages*the biggest advantage is that it is renewable and 2._.*the cells are easy to install and the sunlight is 3._ in most areas.the 4._ one is that it is nonpolluting and clear.the economic one is that it is 5._ of charge.another major advantage is that it is healthy，safe and easier to use.6._