1. When you try to blow out a lot of candles, you may not have enough air in your lungs to get them all. Here’s how to measure your lung capacity.
What you’ll need
·Plastic bottle, such as a camping water container that holds a little more than 2 liters of water. A 2-liter soft drink bottle may be large enough: try the experiment and see.
·Plastic tube 60 centimeters long.
·Large mixing bowl
·Rubber bands(橡皮筋)
·Ruler
·Helper (not a must).
(1) Fill the bowl about one-third full of water and fill the bottle to the top with water.
(2) Hold your hand over the top of the bottle, turn it upside down and put its top under the water in the bowl: your helper will hold the bottle in place.
(3) Tie the ruler to the bottle with rubber bands.
(4) Put the tube in the neck of the bottle, breathe deeply. Hold your nose and blow hard into the tube as long as you can.
What happened?
How much water did you blow out?
Compare the amount of air you blew into the bottle to the amount of liquid the bottle can hold (2 liters, for example).
Do this test on different people and see who has the largest and smallest lung capacity.
1. What’s the purpose of the experiment?
A．To measure how much water you can blow out once. |
B．To test the size of different people’s lungs. |
C．To know the amount of air your lungs can hold. |
D．To hold the air that you blow out at a time. |
2. In this experiment what’s water in the bottle used to do?
A．To hold the air you blow out. | B．To show the size of the bottle. |
C．To measure the air you blow out. | D．To display the process of the experiment. |
3. Which of the following statement indicates the experimenter has a larger lung capacity?
A．Less water is left in the bottle after the experiment. |
B．The experimenter blows out air harder. |
C．Less water is left in the bowl after the experiment. |
D．The experimenter breaths deeply enough. |
2. I’m running some 3,550 kilometers. To be more exact, this jog is mostly around my neighborhood in Ottawa. It is the distance by air to Vancouver that my friend Louise and I are doing. If we make it, Louise and I will get on a plane to Vancouver and compete in one of the BMO Vancouver Marathon weekend races. We may not win medals, but for certain we’ll have cake for my seventy-fifth birthday at the finish line.
The workout for big birthdays represents a big change for me. I used to hate birthdays, especially those milestone ones. No longer feeling young is horrible. As I approached my sixtieth birthday, Louise suggested setting targets to mark milestone birthdays. “That way you are looking forward to something, not dreading it,” she pointed out.
By doing those expanding my world or requiring new skills, I feel myself growing, rather than shrinking. For my sixtieth, I got it into my head that I should do an Olympic distance triathlon(铁人三项赛), which turned out to be a real milestone. After over four hours on the course, I was last among the 95 competitors. But I was the oldest woman competing, so that made me first in my age group. Since then, I’ve looked on the special days as a call for trying something different. For my sixty-fifth birthday, I went to run a half marathon. And I finished seven activities that took me out of my “comfort zone” at seventy.
I’m fortunate to have celebrated so many birthdays in sound health and spirits, so whether I succeed in running to Vancouver or not, I’m grateful for the opportunity. One thing I’ve learned in taking up these challenges is that there are many possibilities for new adventures and achievements, even as we grow older. So do spend every day of every year with a definite end in view, which will release your energy and brighten your day.
1. How does the author plan to observe her 75th birthday?
A．Running 3,550 km around her neighborhood. | B．Going jogging in Ottawa. |
C．Flying to Vancouver with a friend. | D．Joining in a marathon race. |
2. What attitude did the author use to hold toward birthdays?
A．Calm. | B．Fearful. | C．Positive. | D．Unconcerned. |
3. Why did the author think the triathlon a milestone?
A．It made her feel much younger. | B．It changed her attitude to birthdays. |
C．It proved she was in good condition. | D．It made her step outside her comfort zone. |
4. What does the author recommend at last?
A．Living with a clear goal. |
B．Appreciating new challenges. |
time in a bottleC．Remaining energetic by exercising regularly. |
D．Celebrating birthdays by running marathons. |
3.
Something odd is happening to the tired millennial (千禧年的) workers of America. After a year spent with their computers at home, they are turning over the carefully arranged chessboards of their lives and determining to take a risk. Some are giving jobs up to launch a new business, while others are stepping off the boring work totally. Their bank accounts (账户), fattened by a year’s stay-at-home saving, have increased their desire for risk.
If this movement has a battle cry, it is “YOLO” — “you only live once”. Stock (股票) traders use it when making irresponsible bets that sometimes pay off anyway. More broadly, it has come to refer to the attitude that has described a certain type of bored office worker in recent months.
发布评论