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1、Unit 1 单元综合AWashington, D. C. Bicycle Tours Cherry Blossom Bike Tour in Washington, D. C. Duration: 3 hoursThis small group bike tour is a fantastic way to see the world-famous cherry trees with beautiful flowers of Washington, D. C. Your guide will provide a history lesson about the trees and the f
2、amous monuments where they blossom. Reserve your spot before availability- and the cherry blossoms disappear!Washington Capital Monuments Bicycle Tour Duration: 3 hours (4 miles)Join a guided bike tour and view some of the most popular monuments in Washington, D. C. Explore the monuments and memoria
3、ls on the National Mall as your guide shares unique facts and history at each stop. Guided tour includes bike, helmet, cookies and bottled water.Capital City Bike Tour in Washington,D. C Duration: 3 hoursMorning or Afternoon, this bike tour is the perfect tour for D. C. newcomers and locals looking
4、to experience Washington, D. C. in a healthy way with minimum effort. Knowledgeable guides will entertain you with the most interesting stories about Presidents, Congress, memorials, and parks. Comfortable bikes and a smooth tour route (路线) make cycling between the sites fun and relaxing.Washington
5、Capital Sites at Night Bicycle Tour Duration: 3 hours (7 miles)Join a small group bike tour for an evening of exploration in the heart of Washington, D. C. Get up close to the monuments and memorials as you bike the sites of Capitol Hill and the National Mall. Frequent stops are made for photo takin
6、g as your guide offers unique facts and history. Tour includes bike, helmet, and bottled water. All riders are equipped with reflective vests and safety lights.1.Which tour do you need to book in advance?A.Cherry Blossom Bike Tour in Washington, D. C.B.Washington Capital Monuments Bicycle Tour.C.Cap
7、ital City Bike Tour in Washington, D. C.D.Washington Capital Sites at Night Bicycle Tour.2.What will you do on the Capital City Bike Tour?A.Meet famous people.B.Go to a national park.C.Visit well-known museums.D.Enjoy interesting stories.3.Which of the following does the bicycle tour at night provid
8、e?A.City maps.B. Cameras.C. Meals.D. Safety lights.BSteven Stein likes to follow garbage trucks. His strange habit makes sense when you consider that hes an environmental scientist who studies how to reduce litter, including things that fall off garbage trucks as they drive down the road. What is ev
9、en more interesting is that one ofSteins jobs is defending an industry behind the plastic shopping bags.Americans use more than 100 billion thin film plastic bags every year. So many end up in tree branches or along highways that a growing number of cities do not allow them at checkouts (收银台) . The
10、bags are prohibited in some 90 cities in California, including Los Angeles. Eyeing these headwinds, plastic-bag makers are hiring scientists likeSteintomake the case that their products are not as bad for the planet as most people assume.Among the bag makers argument: many cities with bans still all
11、ow shopperstopurchase paper bags, which are easily recycled but require more energytoproduce and transport. And while plastic bags may be uglytolook at, they represent a small percentage of allgarbageon the ground today.The industry has also taken aim at the product that has appeared as its replacem
12、ent: reusable shopping bags. The stronger a reusable bag is, the longer its life and the more plastic-bag use it cancels out. However, longer-lasting reusable bags often require more energytomake. One study found that a cotton bag must be used at least 131 times to be better for the planet than plas
13、tic.Environmentalists dont dispute (质疑) these points. They hope paper bags will be banned someday too and want shopperstouse the same reusable bags for years.1.What has Steven Stein been hired to do?A.Help increase grocery sales.B.Recycle the waste material.C.Stop things falling off trucks.D.Argue f
14、or the use of plastic bags.2.What does the word headwinds in paragraph 2 refer to?A.Bans on plastic bags.B.Effects of city development.C.Headaches caused by garbage.D.Plastic bags hung in trees.3.What is a disadvantage of reusable bags according to plastic-bag makers?A.They are quite expensive.B.Rep
15、lacing them can be difficult.C.They are less strong than plastic bags.D.Producing them requires more energy.4.What is the best title for the text?A.Plastic, Paper or NeitherB.Industry, Pollution and EnvironmentC.Recycle or Throw AwayD.Garbage Collection and Waste ControlCAs we all know, Stephen Hawk
16、ing writes the book A Brief History of Time that explains the origin of the universe. The book spent 147 weeks on The New York Times Best Seller List and has sold 10 million copies. He is, most agree, very smart.In his recently published autobiography My Brief History, Hawking offers four life lessons on how to become a genius.(1)Dont miss opportunities by being