1 . Washington, D.C. Bicycle Tours

Cherry Blossom Bike Tour in Washington, D.C.

Duration: 3 hours

This small group bike tour is a fantastic way to see a world-famous cherry trees with beautiful flowers of Washington, D.C. Your guide will provide a history lesson about the trees and the famous monuments where they blossom. Reserve your spot before availability — 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 memorials 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 hours

Morning or Afternoon, this bike tour is the perfect tour for D. C. newcomers and locals looking 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 Capital Sites at Night Bicycle Tour

Duration: 3 hours (7miles)

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 taking 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．Capital City Bike Tour in Washington.

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 provide?

A．City maps.	B．Cameras.
C．Meals.	D．Safety lights.

2 . On December 19^th,2006,a plane took off on time from the capital airport of Saudi Arabia.After about an hour’s flight,something strange happened in the plane.

The passengers     1    (enjoy)themselves when a small rat stole out from the bag of a young man,which made the young woman nearby     2    (alarm)with loud screaming.Then more and more rats came out of the bag. All the passengers became out of order,especially the women and the children.The steward(机长) managed to get in touch with     3    center on the ground.With the order from the ground,the plane     4    (succeed)landed at the nearest airport.

As soon as the plane was on the ground, all the passengers got off.Then seven specialists got on     5    (catch)these small creatures.Many     6    (mean )had been tried but     7    of them were good enough to catch the rats.

At last they tried to fill in the plane     8    carbon-dioxide(二氧化碳),    9    poisoned all the eighty rats by the poisonous gas.

It    10    (report) that the young man wanted to carry these rats to another city and sell them as pets but no one had expected that these small creatures succeed in escaping from the bag.

3 . Sharks have lived in the world’s oceans for millions of years. A shark has a very good sense of smell. It can find small amounts of substances in water, such as blood, body liquids and chemicals produced by animals. These powerful senses help sharks find their food.     1    

Sharks grow slowly. About forty percent of all sharks lay eggs.     2     Some sharks carry their young inside their bodies as humans do. Some sharks are not able to reproduce until they are twenty years old. Most reproduce only every two years. And they give birth to fewer than ten young sharks. For this reason, over-fishing of sharks is of special danger to the future of the animal.

    3     They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too great. This protects the plants and other forms of life that exist in the oceans.

People hunt sharks for sport, food, medicine and their skin. Experts say the international market for some kinds of sharks has increased because many parts of a shark are valuable.     4     Shark liver oil is a popular source of vitamin(维他命).The skin of a shark can be used like leather. In Asia, people enjoy a kind of soup made from shark fins. Experts say a fisherman can earn a lot of money for even one kilogram of shark fins.

Sharks are among the oldest animals on Earth.     5     If too many sharks in one area are killed, the group of sharks may never return to normal population levels.

A．The others give birth to their young.

B．Sharks are important for the world’s oceans.

C．This is a threat to other forms of life in the ocean.

D．Collectors pay thousands of dollars for the Jaws of a shark.

E．Sharks are valuable to us and we can make full use of them.

F．But some sharks are in danger of disappearing from Earth.

G．Sharks cat fish, other sharks, and plants that live in the ocean.