計(jì)算題
1. What percentage of area is shaded?

Answer: _                                                          .
2. If a group of 6 people have an average age of 21,  and each person is half the age of the next person,
    what are the ages of the 6 people?
Answer: _                                                           .
1. “略”
2. 2,4,8,16,32and64
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2012-2013學(xué)年陜西省寶雞中學(xué)高二上學(xué)期期末考試英語試卷（帶解析） 題型：閱讀理解

They are the sort of friends who are so close they trust each other with their lives.If one falls, the other is there to catch him.
They are Wellman, whose legs were permanently injured nine years ago in a rock-climbing accident and Corbett, an experienced rock climber. Together, they climbed up Half Dome. the famous 2,000-foot rock in the Yosemite National park, through one of the most difficult routes(路線).
During the climb, Corbett took the lead, hit in the metal spikes (尖狀物)that guided the ropes and climbed up. Then, after Wellman pulled himself  up the rope, Corbett went down to remove the spikes and climbed up again. This process was repeated time and again, inch by inch, for 13 days Wellman’s job was not easy either.  He got himself up the rope through upper body strength alone. In all, Wellman figured(計(jì)算) that he had done 5.000 pull-ups up the rope on the climb.
However, when the two men first met, they never talked about climbing. “He knew that was how I got injured.”Wellman said. Until one day Wellman decided that be wanted to climb again and they started training
Their climb of Half Dome was not all smooth. At one point, pieces of rock gave way, and Corbett dropped down quickly. Wellman locked their rope in place, stopping the fall at 20 feet. His quick action probably saved his friend’s life.
“Your partner can save your life—you can sane your partner’s life” Wellman said as the pair received congratulations from friends “there are real close tic.”
【小題1】Which of the following was a challenge for Corbett in climbing Half Dome?

A．To climb up to remove the spikes. B．To climb it twice.
C．To do 5,000 pall-ups up the rope.D．To lock the rope in place.
【小題2】Why did the two men never talk about climbing when they first met?
A．climbed was poorly trained.
B．Wellman had lost interest in climbing.
C．Corbett didn’t want to hurt Wellman.
D．Wellman hadn’t decided whether to climb again.
【小題3】What do we know about Wellman?
A．He climbed Half Dome by himself.
B．He was disabled in a traffic accident.
C．He stopped rock-climbing for some time.
D．He was saved by Corbett during the climb.
【小題4】The main idea of the text is that.
A．two heads are better than one.
B．friendship is precious in life
C．the disabled should never give up.
D．a(chǎn) man can be destroyed but cannot be defeated.

查看答案和解析>>

科目：高中英語 來源：2010-2011江西寧岡高一下學(xué)期期中英語試卷 題型：閱讀理解

What makes a person a scientist? Does he have ways or tools of learning that are different from those of others? The answer is “no”. It isn’t the tools a scientist uses but how he uses these tools which make him a scientist. You will probably agree that knowing how to use a power is important to a carpenter. You will probably agree, too, that knowing how to investigation, how to discover information, is important to everyone. The scientist, however, goes one step further; he must be sure that he has a reasonable answer to his questions and that his answer he gets to many questions is into a large set of ideas about how the world works.
The scientist’s knowledge must be exact. There’s no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different, any changes the scientist observes in a demonstration(實(shí)證) must be explained by the changes in the conditions. This is one reason why investigations are important in science. Albert Einstein, who developed the Theory of Relativity, arrived at the theory through mathematics. The accuracy(正確性) of his mathematics was later tested through investigation. Einstein’s ideas were proved to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations(計(jì)算) that may test his investigations
【小題1】 What makes a scientist according to the passage?

A．The tools he uses.B．His ways of learning
C．The way he uses his toolsD．The various tools he uses
【小題2】 “…knowing how to investigation, how to discover information, is important to everyone.”
The writer says this to show ___________.
A．the importance of information
B．the difference between scientists and ordinary people.
C．the importance of thinking
D．the difference between carpenters and ordinary people
【小題3】 A sound scientific theory should be one that _________.
A．works under one set of conditions at one time and also works under the same conditions at other times
B．doesn’t allow any change even under different conditions
C．Can be used many times under different conditions
D．Can be used for many purposes
【小題4】 What is the main idea of the passage?
A．Scientists are different from ordinary people.
B．The Theory of Relativity.
C．Exactness is the core (核心) of science.
D．Exactness and way of using tools are the keys to making of a scientist.

查看答案和解析>>

科目：高中英語 來源：2010-2011河南長葛天陽中學(xué)高一下學(xué)期期中英語試卷 題型：閱讀理解

Ellen Parker was worried about her health. She could not walk very quickly and it was difficult for her to climb stairs（爬樓梯）. She was soon out of breath.（氣喘吁吁）
“I think I had better go to the doctor, ” she thought.
She went to the doctor and told him her problem.
“I’m not at all surprised, ”he said. “It’s obvious （明顯的）what your problem is.”
He examined her and then gave her some advice.“If you don’t do what I say, Mrs. Parker,” he said. “You will have a heart attack（心臟�。�. It could kill you.”
Ellen was very worried as she left the doctor’s. She knew that she had to take his advice but that would not be easy and it would take time.
The next day she went shopping. The first shop she went into was a butcher’s shop（肉店）.
“I’d like ten pounds of steak (大塊肉片), please,” she said.
“Certainly, madam,” the butcher(屠夫) answered and went into the cold room and found a large piece of steak. He brought the huge piece of meat back into the shop and placed it on the scale(秤).
“That’s just ten pounds,” he said.
“That’s big enough,” Mrs. Parker said.
The butcher worked out(計(jì)算) the price.
“At $ 4.99 a pound that will be $ 49.90, please. Would you like me to cut it into small pieces for you?”
“Oh, I don’t want to buy the meat,” Mrs. Parker said.
“If you don’t want to buy it,” the butcher said angrily, “Why did you ask me to get it for you?”
“My doctor told me that I am overweight (超重的)and have to lose ten pounds. I wanted to see what ten pounds of flesh looked liked.”
【小題1】. Why did Ellen Parker visit the doctor?

A．She had a heart attack.B．She had a problem with her health.
C．She was unhappy about her weight.D．She could not sleep well.
【小題2】. Why did she ask for ten pounds of steak?
A．she wanted to buy some for dinner.B．She wanted to lose weight
C．Her doctor had told her to eat steak.
D．She wanted to see what ten pounds of meat looked like.
【小題3】.. What was her real problem?
A．She ate too much steak.B．She weighed too much.
C．The doctor didn’t know.D．She could not walk very quickly.
【小題4】. What did the doctor think might happen to Ellen?
A．she might put more on weight. B．She might stop eating too much.
C．She might have a heart attack.D．She might go to another doctor.

查看答案和解析>>

科目：高中英語 來源：同步題 題型：閱讀理解

計(jì)算題.
1.At 12 noon my watch was correct. However, it then started to lose 18 minutes per hour.
Four hours ago it stopped completely and is now showing the time as 15:30.
What is the correct time now?
Answer: _____________________________________________________________
2.
What value of weight should be placed on the scales to balance?
Answer: _____________________________________________________________

查看答案和解析>>

同步練習(xí)冊(cè)答案