阅读理解。
"If you run for more than five minutes at any time, you might need a pair of running shoes." Advises
Stephen Pribut, a US sports expert. Running shoes are highly technical footwear. The provide stability
(牢固) while bearing up to three times the wearer's body weight. But it's not easy to find the right
pair. Finding the right running shoes is something of an art, or a science and a feel.
The science part begins with the shape of the arch (弓) of your foot, which anyone can find out at
home with this quick experiment: Put your foot in water and place it on a piece of brown paper. If you
see a"C" shape on the paper when you remove your foot, you have a rare high arch. If the shape looks more
like a rectangle, that means you have flat feet. See something in between? That's a normal arch.
Conveniently for shoppers, shoe companies nowadays divide their shoes in three categories: neutral
( for high arches), stability ( for normal or low arches) and motion control (for flat arches). So you'll
know which type suits you.
At this point, most people would just grab an appealing shoe and try it on, But professionals would
do a few quality-control tests. First, you bend the shoe toe to heel to see where it bends. If it's not
at the forefoot---where the foot actually be bends, be afraid. Then you grip both ends and twist in
opposite directions. If you can twist it like a tower, it means there's zero support. Finally, you
squeeze (挤) he heel in both directions. A stable heel won'tcave in.
Now you need to check the mold (模子) that shapes the inside of the shoe: whether its wide or narrow
in the mid-foot, how it sits on the heel and how roomy the toe box is.
It's wise to make the shoe purchase in the late afternoon, to allow for any swelling (肿胀) that your
feet do throughout the day. Toes also decide sizing choices. The rule is that you need a finger's hehe
from your longest toe (whether that's your big one or not) to the end of the shoe.
1. What is the main idea of this passage?
A. Advantages of wearing running shoes fitting you.
B. Ways to get to know about the shape of the arch of your foot.
C. Advice on how to choose the right pair of running shoes.
D. Best time to buy a pair of running shoes.
2. If the arch of your foot look like a "C" shape, you have ______.
A. a normal arch
B. a high arch
C. a flat arch
D. a low arch
3. The underlined phrase "cave in" most probably means ______.
A. bend
B. stretch
C. shake
D. crash
4. Why is the late afternoon the ideal time to go shopping for shoes?
A. We are likely to be more patient in the afternoon.
B. Feet usually become larger late in the day.
C. The toes become longer late in the day.
D. The arch of our feet will be in best shape in the afternoon.

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