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 will not 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 is the perfect excuse to sign up for that hip-hop dance class you have 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 are short of time or want to get everything you can out of your usual 45-minute workout，try total-body activities．You can evenng your arms as hard as you can while you walk．
(1)
How can water help you burn more calories?
[ ]
A．
By pushing your body．
B．
By wetting your clothes and shoes．
C．
By forcing you to run father．
D．
By forcing your body to work harder．
(2)
What does “it” in Part 4 refer to?
[ ]
A．
Dance．
B．
Movement．
C．
Body．
D．
Muscle．
(3)
Which of the following statements is TRUE?
[ ]
A．
One can burn more calories when walking on the sand than on land．
B．
One can burn more calories when walking on stones than on earth．
C．
One can burn more calories when running in water than on the sand．
D．
One can burn more calories when exercising using the upper body than using the lower body．
As we all know that every day we go to school and listen to the teacher, and the
teacher will ask us some questions．Sometimes, the classmates will ask your opinions of the work of the class．When you are telling others in the class what you have found out about these topics, remember that they must be able to hear what you are saying．You are not taking part in a family conversation or having a chat with friends-you are in a slightly unnatural situation where a large group of people will remain silent, waiting to hear what you have to say．You must speak so that they can hear you-loudly enough and clearly enough but without trying to shout or appearing to force yourself．
Remember, too, that it is the same if you are called to an interview whether it is with a professor of your school or a government official who might meet you．The person you are seeing will try to put you at your ease but the situation is somewhat different from that of an ordinary conversation．You must take special care that you can be heard．
(1)
When you speak to the class, you should speak ________．
[ ]
A．
in a low voice
B．
as slowly as possible
C．
forcefully
D．
loudly
(2)
The situation in the class is ________ that in your house．
[ ]
A．
not very different from
B．
sometimes the same as
C．
sometimes not the same as
D．
not the same as
(3)
The main idea of this passage is ________．
[ ]
A．
that we must speak loudly in some situations．
B．
that we should talk in different ways in different situations
C．
that we must keep silent at any time
D．
that we must talk with the class
阅读短文，从题中所给的(A，B，C，D)中选出最佳选项。
One would have to be a fool to overlook the importance of using positive thinking for you rather than allowing negative thinking to work against you．In recent years, research in psychopharmacology(精神药理学)has proved how many people have known over the centuries：a positive attitude is good for you, good for your health, good for your wealth, good for everything．Researchers found that a positive attitude produces a specific chemical reaction which makes people feel better, while negative thinking results in a decline of hormone(荷尔蒙)and shuts down the immune(免疫的)system．This leads to illness and depression．Positive thoughts will make you feel better．Even if you must begin by literally forcing yourself to be positive(faking it, so to speak), it will become contagious(会传播的)and the positive thoughts will generate nice little chemicals and good feelings which will reinforce the positive thoughts．
For example, if you force yourself to smile or laugh, even when you don't feel like smiling or laughing, if you keep at it for a few minutes, you will soon feel like it．Feelings can generate thoughts, but thoughts can also generate feelings．Control your thoughts and you can control your feelings．Positive thinking is important in all aspects of our lives．There is probably no single factor more important in determining your success in achieving your career objectives than your own attitude．
It's often been said that in the land of the blind, the one-eyed man is king．And in the office of militant(好战)negativism, the positive workers shine like gold．You cannot control external events, but you can learn to control your reaction to those events and thereby have a positive attitude and be happy．This vital key to success is totally within your control．Use it．
(1)
We can infer from the passage that ________．
[ ]
A．
positive thinking can cure you of your diseases
B．
positive thinking can easily be generated by anyone
C．
a decline of hormone may cause you to be depressed
D．
a specific chemical reaction is the cause of negative thinking
(2)
According to the passage, which of the following is true?
[ ]
A．
Feeling and thoughts can generate each other．
B．
It's easier to control thoughts than to control feelings．
C．
Your success depends wholly on your attitude．
D．
Keeping smiling will surely make you successful．
(3)
Just like a one-eyed man in the land of the blind, you should ________．
[ ]
A．
take positive attitude in the office of militant negativism
阅读快车系列答案
industrial fishing in the 1950s. The scientists found the populations of large fish like tuna(金枪鱼), swordfish and cod（鳕鱼） have dropped by ninety percent in the past fifty years.
big fish, but also they are smaller than those of the past.
an those of the past.