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You probably don’t know as much as you think you do. When put to the test, most people find they can’t explain the workings of everyday things they think they understand. Don’t believe me? Find an object you use daily (an ear phone, a toilet, a stereo speaker) and try to describe how it works. We call this phenomenon the illusion of explanatory depth(解释性深度错觉). It means you think you fully understand something that you actually don’t.
We see this every day in buzzwords (流行语). Though we often use them, their meanings are usually unclear.
Several years ago, I attended a meeting where the president spoke about global business practice in the coming year. During the talk, people around the room nodded in agreement. Afterwards, though, many of them discussed how to manage global business practice, none of the people who had nodded in agreement could exactly describe what it actually meant.
No matter what job you do, discovering your gaps in knowledge is necessary. An unknown gap means you might not fully understand a problem.
To discover the things you can’t explain, take a lesson from teachers. When you guide someone else, you have to fill the gaps in your own knowledge. But you don’t need to teach someone else. Explain concepts to yourself as you learn them. Get in the habit of self-teaching. Involve others in learning together. Ask them to explain difficult concepts, even if you think everyone understands them. Not only will this help you to work through new ideas, but it will occasionally uncover places where your friends don’t understand the explanations.
They can help you have a better understanding of problems.

A．An active learner usually puts it into reality.

B．That can prevent you from solving the problem properly.

C．Your explanations can’t show your own knowledge gaps.

D．Help recognize the knowledge gaps of the people around you.

E. You’re likely to discover unexpected gaps in your knowledge.
F. They cover gaps in our knowledge, serving concepts we don’t fully understand.
G. When you do uncover these gaps, treat them as learning opportunities, not signs of weakness.

A.		Guittard Chocolate Truffles Favors We have got the perfect wedding favor for your guests, which will really win your guest over. Each truffles are made with some of the finest ingredients from Guittard with vintage chocolate. Available in 24 pcs per box. Don’t worry about left over, you will be having fun eating them while you assemble the favors together.
B.		Chocolate Covered Delight Square Come in our beautiful square, you can find a variety of chocolate such as Pastel chocolate covered apricots and cranberries, chocolate covered espresso mix, and powder dusted chocolate almonds make for a really fine gift. Everyone loves to choose chocolates freely! Furthermore, they are fresher than packaged ones.
C.		Dove Milk Chocolates Bouquet What better way to celebrate a special day than adding a little sweetness with luscious dreamy Dove Chocolate. It can let them know you are thinking of them and loving them. Two Dozen stemmed chocolate square dove chocolates, rose shaped. All bouquets include your gift message and a reusable container.
D.		Ferrero Rocher 48 count box At the heart of Rocher chocolates are a whole roasted hazelnut and creamy chocolaty filling inside a light, crispy wafer, all wrapped in milk chocolate and finely chopped hazelnuts. This beautiful clear box contains 48 gold foil wrapped chocolates, enough and perfect for your special gathering.
E.		Kinder Surprise Chocolate Egg Kinder Surprise eggs are those lovely milk chocolate eggs with white chocolate lining and a surprise toy, which often requires adults to figure out how to put it together! Kids all love Kinder eggs, because it is one of their favorite treats. The toys sometimes turn out to be collectors’ items too!
F.		Mars Snickers Bar The Snickers candy bar was introduced in 1930. Packed full of roasted peanuts caramel and milk chocolate. Packed with roasted peanuts, creamy nougat, rich caramel, and milk chocolate. Snickers candy bars will drive your taste buds wild. Snickers handles your hunger, so you can handle everything else!

下面是一些需要购买巧克力的人，请为她们选择项是和他们的巧克力：
Mr. And Mrs. Johnson are going to buy a gift fro their nephew Mike, who likes chocolate very much. They hope their gift can offer Mike more than delicious food, like bringing more fun and helping him develop a good hobby.
Aron is going to marry Maggie in this month, but this Valentine’s Day he can’t be with his fiancee because he is on a business trip. Therefore, he decides to buy some chocolates in special shape to express his love and missing.
After a 10 years’ leave, Isabella and her high school classmates will have a great party to celebrate the anniversary of graduation. Isabella hopes to share her favorite chocolate, which is with wafer and nuts, with her classmates.
Emma and her husband have a habit to enjoy chocolate with their children every night when watching TV. In order to buy fresh and various chocolates at a lower price, she will choose those unpacked ones.
Cooper Smith is an enthusiastic fan of out-door sports. Each time he goes hiking or rafting, he will prepare everything carefully, including buying some handy chocolates for his body energy supply.

首先请阅读以下几种巧克力的广告：

A.		Guittard Chocolate Truffles Favors We have got the perfect wedding favor for your guests, which will really win your guest over. Each truffles are made with some of the finest ingredients from Guittard with vintage chocolate. Available in 24 pcs per box. Don’t worry about left over, you will be having fun eating them while you assemble the favors together.
B.		Chocolate Covered Delight Square Come in our beautiful square, you can find a variety of chocolate such as Pastel chocolate covered apricots and cranberries, chocolate covered espresso mix, and powder dusted chocolate almonds make for a really fine gift. Everyone loves to choose chocolates freely! Furthermore, they are fresher than packaged ones.
C.		Dove Milk Chocolates Bouquet What better way to celebrate a special day than adding a little sweetness with luscious dreamy Dove Chocolate. It can let them know you are thinking of them and loving them. Two Dozen stemmed chocolate square dove chocolates, rose shaped. All bouquets include your gift message and a reusable container.
D.		Ferrero Rocher 48 count box At the heart of Rocher chocolates are a whole roasted hazelnut and creamy chocolaty filling inside a light, crispy wafer, all wrapped in milk chocolate and finely chopped hazelnuts. This beautiful clear box contains 48 gold foil wrapped chocolates, enough and perfect for your special gathering.
E.		Kinder Surprise Chocolate Egg Kinder Surprise eggs are those lovely milk chocolate eggs with white chocolate lining and a surprise toy, which often requires adults to figure out how to put it together! Kids all love Kinder eggs, because it is one of their favorite treats. The toys sometimes turn out to be collectors’ items too!
F.		Mars Snickers Bar The Snickers candy bar was introduced in 1930. Packed full of roasted peanuts caramel and milk chocolate. Packed with roasted peanuts, creamy nougat, rich caramel, and milk chocolate. Snickers candy bars will drive your taste buds wild. Snickers handles your hunger, so you can handle everything else!

下面是一些需要购买巧克力的人，请为她们选择项是和他们的巧克力：
Mr. And Mrs. Johnson are going to buy a gift for their nephew Mike, who likes chocolate very much. They hope their gift can offer Mike more than delicious food, like bringing more fun and helping him develop a good hobby.
Aron is going to marry Maggie in this month, but this Valentine’s Day he can’t be with his fiancee because he is on a business trip. Therefore, he decides to buy some chocolates in special shape to express his love and missing.
After a 10 years’ leave, Isabella and her high school classmates will have a great party to celebrate the anniversary of graduation. Isabella hopes to share her favorite chocolate, which is with wafer and nuts, with her classmates.
Emma and her husband have a habit to enjoy chocolate with their children every night when watching TV. In order to buy fresh and various chocolates at a lower price, she will choose those unpacked ones.
Cooper Smith is an enthusiastic fan of out-door sports. Each time he goes hiking or rafting, he will prepare everything carefully, including buying some handy chocolates for his body energy supply.

A. My name’s Marta and I’ m from Mexico City, but I moved to Los Angeles, California, five years ago, now I am living in an apartment at No．3178 SE Timmer Broadway．I am 28, single．I am a customer service representative for a large financial company．I am an outgoing person．I love to laugh and have fun! I enjoy cooking, dancing and listening to music．I don’t like watching or playing sports．You should be an outgoing, considerate lady with a good sense of humor, to share the apartment．Are you the one? Email and let’s have further talk.
B. My name’s Mark, and I’m from Hollywood, California．I’m a fitness instructor in Los Angeles．I am a friendly and easy-going person; I love playing sports-especially football and working out at the gym．I also play the guitar．My best friend David, who often has sports with me, went to Mexico last month．To avoid loneliness, I’d like very much to own a new friend who would share the fun of sports with me．I am longing.
C. My name’s Park Jun Seo, but you can call me Jun．I moved from Seoul Korea to Los Angeles two years ago．I am a graphic designer and I am looking for my younger brother, Lean Ban Seo, who might be in this city．As the story is too long, I just hope to find him and have my family reunited．He is lame at the right leg, 19 years old, 1.79 meters tall, with very big eyes and fair curly hair．With his picture of two years ago enclosed, I would be very appreciated if you have any information about that．Telephone me at 818-5789.
D. My name is Don and I am a programmer at a computer company．I have designed several pieces of software that can help students learn better, especially suitable for primary students who have some language disability to learn words and help them pronounce more correctly．If you think you need one, please fax to 857-4693．You can purchase by post.
E. My name is Mauricio, and I’m a computer programmer working in the Los Angeles area．I am kind of shy, but maybe you can help me to be more outgoing．I like cooking, playing computer games, and chatting with friends online．If you think you are the proper one to be my E-pal, let’s chat!
F. My name’s Judy and I’m from Quebec, Canada．I am a sales woman in one of the women underwear stores in Montreal．I’d like to have more visitors to my shop．And you can bargain for a reduction of 10% to 30%, if you purchase in package．Let’s be friends.
请阅读以下网站回复的信息，然后匹配回复的信息和网站原登出的博客信息：
I am a professional sportsman and work in the same city．I am so glad that I will have a good friend who can be the opponent to improve my techniques．E-mail me at bitter flower @yah -oo.com.
As a shop owner, I might drop in when I go downtown．But may I know your exact address? When is it convenient for a visit? Thank you!
God bless you! I’m a journalist and happened to read your brief story．A neighbor of mine looks exactly the same as the man in the picture you uploaded．This might be a chance in a million．Telephone me at 818-5690.
As a new comer and a freshman, I am looking for a room as close to my university as possible．I would like to have some friends, too．I think your place might be the right choice for me．But can I know how much the rent is?
I am a salesman from Paris．My first difficulty working in this city is language．I would appreciate it if you could help me learn English through the Keyboard.

阅读下列应用文及相关信息，并按照要求匹配信息, 请在答题卡上将对应题号的相应选项字母涂黑。
首先请阅读下列图片及文字说明：
A. Drop-Bar Road Bikes

Generally lighter in weight than the typical mountain or comfort bike, road bikes are good for multiple pavement uses including fitness riding, commuting, long-distance/event rides, touring and racing.
Drop-bar handlebars are lightweight and aerodynamic and are a better choice if you want to go faster or are more concerned with efficiently transferring your energy into making the bike move forward. They also allow for a greater number of riding and hand positions than flat-bars. Their more aerodynamic riding position (bent over at the waist) may put more strain on your back if you are less flexible.
B. Flat-Bar Road Bikes

Flat-bar handlebars combine the efficiency of drop-bar road bikes with a slightly more upright riding position. This allows you to sit up in a higher and more relaxed position so you can better see the road and potential risks. An upright position also reduces strain on your hands, wrists and shoulders. This increased versatility comes with the tradeoff of being slightly less efficient (from an aerodynamic standpoint) than the typical drop-bar road bike.
C. Hardtail Mountain Bikes

Mountain Bikes are best for dirt or rocky trails and gravel roads; they are OK for pavement too (with tire change).
Hardtail bikes feature a front suspension fork and a rigid back with no rear suspension shocks. This type of mountain bike is much less expensive and lighter in weight than a typical full-suspension mountain bike. A hardtail is the more versatile choice if you plan to use it for both paved and unpaved surfaces. The tradeoffs from a full-suspension mountain bike? A hardtail is less able to safely handle more technical singletrack trails, provides less overall shock absorption and, in some situations, delivers less rear wheel traction.
D. Full-Suspension Mountain Bikes

Full-suspension mountain bikes have both front and rear suspension shocks making them ideal for backcountry trails or technical (steep, bumpy, twisty) singletrack. They also stand up to more aggressive riding including jumps or drops of up to 5 feet. As mentioned above, full-suspension bikes are more expensive and generally heavier than hardtail bikes.
E. Folding bikes

These bikes can be folded up and placed in a carrying bag, which makes them handy for commuters with limited storage space at home or the office. They are lightweight yet strong and can be folded up quickly and easily. Folding bikes are also a good choice for those who want to travel with their bike.
F. Electric-assist bikes

These bikes feature a battery-powered motor that can help you climb hills easily or make your commute less strenuous. Built-in sensors can monitor how much pressure you're putting on the pedals and then apply battery power accordingly.
以下是一些用户信息，请把图片与相关介绍匹配起来。
Tom is a bike lover. He wants to buy a road bike that can go fast on the road. Speed is important but it is more important for him to see the road and stay safe, since the road on which he rides is often full of traffic.
Jack is an office worker. Every day he goes to work by subway. There is still a long way from where he lives to the subway station, so he decides to buy a bike, which can be easily put at home, on the subway train and his office.
Peter loves making long-distance journey by bike. When travelling, he has to climb hills or ride on rocky trails, which makes him too tired to go. He wants to continue his journey even when he is tired, but he doesn’t want to travel by car or ride his motorbike.
Mark is a bike enthusiast who often rides in the mountainous areas. Unfortunately, his bike was damaged when he was riding on the mountain. Now he is going to buy a new mountain bike. Being a rich man, Mark doesn’t care about the price of the bike, but it must be tough and flexible enough to jump and drop on the mountain road.
Jim needs a new mountain bike that can be ridden on both paved and unpaved surfaces. It doesn’t need to be too expensive. He hopes to buy a bike that is lighter in weight than a typical full-suspension mountain bike