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Ways to Burn More Calories
Run through water
Running in water is one of the toughest activities you can perform because the wet stuff is about 12 to 15 times as resistant (具有阻力的) as air. Try your hardest to run and you can burn about 17 calories per minute.
Start fast
Don’t be fooled — slow and steady won’t win the race. A recent study found that after a short warm-up, cyclists who rode hard during the first half of their workouts and then slowed for the second half burned about 10 percent more calories than those who started slow and finished fast.
Take to the sand
Here is some easy-to-remember advice on burning calories: the softer the surface, the more you burn. By walking or running on the beach, you can use up 20 to 50 percent more calories than you do going at the same pace on a hard trail.
Shut up and dance
Here’s the perfect excuse to sign up for that hip-hop dance class you’ve been eager to try. Surprising your body with new activities — dance, a new sport, you name it — forces it to work harder because it’s doing unfamiliar movements and using muscle groups in different ways.
Use your arms
Getting both your upper and lower body involved can provide a big calorie-burning advantage. So if you’re short of time or want to get everything you can out of your usual 45-minute workout, try total-body activities such as rowing ormming. You can evenng your arms as hard as you can while you walk.

  1. 1.

    How can water help you burn more calories?

    1. A.
      By pushing your body.
    2. B.
      By wetting your clothes and shoes.
    3. C.
      By forcing you to run faster.
    4. D.
      By forcing your body to work harder.
  2. 2.

    What does “it” in Part 4 refer to?

    1. A.
      Dance.
    2. B.
      Movement.
    3. C.
      Body.
    4. D.
      Muscle.
  3. 3.

    Which of the following statements is TRUE?

    1. A.
      One can burn more calories when walking on the sand than on land.
    2. B.
      One can burn more calories when walking on stones than on earth.
    3. C.
      One can burn more calories when running in water than on the sand.
    4. D.
      One can burn more calories when exercising using the upper body than using the lower body.
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The secret of carrier pigeons' unbelievable ability to find their way home has been discovered by scientists: the feathered navigators follow the roads just like we do.
Scientists now believe the phrase "as the crow (乌鸦) flies" no longer means the shortest most direct route between two points. They say it is likely that crows and other day birds also choose AA-suggested routes, even though it makes their journeys longer.
Scientists at Oxford University spent 10 years studying homing pigeons using global positioning satellite (GPS) and got a surprising result. The birds often don't use the sun to decide their directions.
Instead they fly along motorways, turn at crossing and even go around roundabouts (绕道) , adding miles to their journeys.
"It really has knocked our research team sideways to find that after a decade-long international study, pigeons appear to ignore their inbuilt directional instincts (本能) and follow the road system," said Prof Tim Guilford, reader in animal behavior at Oxford University's Department of Zoology.
Guilford said pigeons use their own navigational system (导航系统) when doing long distance trips or when a bird does a journey for the first time.
"But once homing pigeons have flown a journey more than once, they can fly home on a habitual route, much as we do when we are driving or walking home from work," said Guilford.
"In short, it looks like it is mentally easier for a bird to fly down a road. They are just making their journey as simple as possible."

  1. 1.

    What would be the best title of the passage?

    1. A.
      How Pigeons Find Their Ways Home?
    2. B.
      Why Pigeons Can Fly long Distance?
    3. C.
      Birds Follow Roads as We Do.
    4. D.
      Why Crows Fly the Shortest D stance?
  2. 2.

    What does the words "the feathered navigators" refer to?

    1. A.
      The crows.
    2. B.
      The pigeons.
    3. C.
      Day birds.
    4. D.
      Animals that can fly.
  3. 3.

    Scientists used to think that homing pigeons often find their directions ____.

    1. A.
      by global positioning satellite
    2. B.
      by the sun
    3. C.
      by the road system
    4. D.
      by following other birds
  4. 4.

    Why do homing pigeons tend to follow the road system daring the r journey?

    1. A.
      Because they don't have their inbuilt directional instincts now.
    2. B.
      Because their own navigational system doesn't work.
    3. C.
      Because it is too hard to use their own navigational system.
    4. D.
      Because it is easier to make journey simple by following road system.
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