题目内容

气相色谱法中，可用于衡量柱效的参数是（）

A. 保留时间
B. 保留体积
C. 峰宽
D. 峰高

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Task 1 Read the passage. Write T (true) or F (false) for the statements.Black Friday is the Friday following Thanksgiving in the US. On this day, the Christmas shopping season begins and large stores all over the US have sales. Recently, Black Friday has been the busiest shopping day of the year in the US.The name “Black Friday” originated in Philadelphia where it was used to describe the heavy traffic in the city after Thanksgiving. Later, another explanation of the name was made. When a company loses money, we say it is “in the red” and when it makes money, it is “in the black”. So “Black Friday“has come”to symbolize the day when companies can start to make a big profit.Black Friday has caused some problems. In 2008, a crowd of 2000 shoppers were waiting outside a local Wal-Mart in New York. When the store opened, everyone rushed in and one person was killed in the crush. Due to incidents like this one, many people now do their Black Friday shopping online.. It is common for people to wait until Monday to do this because they can buy things online that do not sell over the weekend. This has led to a new name for the Monday after Thanksgiving-Cyber Monday.1.Black Friday is the Friday before Christmas.2.It is currently the busiest shopping day of the year in the US.3.The name “Black Friday” came from a song.4.Black Friday can be dangerous.5.Cyber Monday is the day when the computer shops all have big sales.

Task 2 Read the passage. Choose the best answer.Competition time!As Thanksgiving gets nearer, would you like to win a cupboard full of food and drink? Enter our competition and you’ll have the chance to do a ten-minute trolley dash. That’s right, one lucky winner will get exactly ten minutes to fill the trolley with anything you like-fresh fruit and vegetables, tinned and frozen food, cakes, biscuits, juice and crisps… anything on our shelves you can have it!Here’s all you have to do to win this amazing prize. In no more than one hundred words, tell us why we’re your favorite supermarket. Send your entry by email to foodparadise@marketworld.com.Make sure to include your address and your telephone number too.As well as our amazing first prize, we have lots of other prizes to give away, from boxes of chocolates to bouquets of flowers! All entries must be submitted by midnight on October 15th.1.What type of passage is this?A.An advertisement for a job.B.An advertisement for a competition.C.An advertisement for a college club.D.An advertisement for a new restaurant.2.What will the winner receive as a prize?A.Clothes.B.Food and drink.C.Vouchers.D.Flowers and chocolates.3.What do you need to do if you want to enter the competition?A.Write about why you like the supermarket.B.Write some suggestions about how the supermarket could be better.C.Answer some simple questions.D.Complete a word puzzle.4.How long should your entry be ?A.Between 100 and 200 words.B.Between 200 and 300 words.C.A maximum of 100 words.D.A maximum of 200 words.5.How should you send your competition entry?A.By postB. By faxC. By emailD. By text.

Task 3 Read the passage. Fill in the blanks( with no more than three words.)Hello John,Thanks for your letter. I am glad you're enjoying college, but I'm sorry to hear that you're finding living in London is so expensive . It can be very difficult living away from home. I know what it's like ! Maybe I can give you some advice.When you go shopping at the supermarket, it's a good idea to go when you're not hungry. If you shop when you're hungry, you'll buy much more than you really need, and you'll spend much more money too!Have you got a student card? Make sure you show it to salesclerks when you are shopping. Many shops give students a discount, but they don't always advertise it.Have you thought about cooking with your roommates? It's much cheaper to cook for a group than for just one person. I'm sending you a cook book. You should try the recipe for homemade pizza. It's delicious.Take care,Maggie1.Maggie is writing to John because she wants to ___ to him on how to live and eat in a cheaper way.2.Firstly, Maggie thinks it's a good idea for John to go shopping when he's not hungry, otherwise he will buy much more and _.3.She also suggests that he should show his student card to salesclerks as they might give him _.4.Finally, she says it would be much cheaper if he could cook .5.She has sent him a cook book and suggests that he should try the recipe____

Task 4Read the passage. Fill in the blanks (with no more than three words)Rice puddingRice pudding is a delicious and warming dessert, which tastes especially good on a cold winter night. Make sure you stand beside the pudding as it cooks, and don’t stop stirring, or the rice will stick to the bottom of the pan.You can serve this rice pudding with jam, honey, sliced bananas or other chopped fruits. It also tastes great with honey if you want a healthier option than sugar. Here’s the recipe (serving four people). Put eight spoonfuls of rice into a pan Pour 280 milliliters of milk,280 milliliters of cream and four spoonfuls of cold water into the pan Add a teaspoonful of vanilla extract Stir the rice, milk, cream, water and vanilla extract together over a low heat until it comes to the boil Turn down the heat and let the rice simmer for 20 minutes Remove from the heat Stir six spoonfuls of sugar and serve1.What's the best time of year to eat rice pudding?It's a good dessert to eat on a(n)__.2.Why do you need to keep stirring when cooking the pudding?Because in that way the rice won't the bottom of the pan.3.What can you serve this pudding with?I can serve it with jam, honey, or other chopped fruits.4.What is a healthier option than sugar?_.5.How many people does this recipe serve?It serves ____.