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Walking is the exercise of choice for most dieters. You don't need a gym membership to do this effective exercise. Here's how to prepare: The only equipment you really need is a decent pair of walking shoes. What matters most is comfort. When you're shopping for shoes: ●Wear the socks you plan to exercise in. That way you'll get the best fit. ●Try on both shoes. Most people's feet aren't exactly the same size. Choose a pair that fits your larger foot. ●Allow a little extra room. Feet swell when you walk, so buy a pair with about a thumb's width between your longest toe and the toe of the shoe. Sure, walking comes naturally. But the following tips will help you stay comfortable and get the most out of your walk: ●Look ahead. Keep your neck straight and your head held high. If you have to look down to see where you're going, lower your eyes, not your head. ●Move both arms. Let your arms swing naturally at your sides, and you'll burn up to 15 percent more calories by keeping your arms moving. ●Don't carry unnecessary weight. Some people try to get in extra exercise by carrying a couple of light dumbbells(哑铃), but fitness-walking experts say that's risky: The weights can pull you off balance and tighten muscles in your back or legs. Walking is one of the safest activities. Still, the following tips may be helpful: ●If you're walking at night, wear a piece of reflective clothing. ●If the path is dimly lit, bring a good flashlight. ●When the weather's hot, be sure to drink some water before you set out and better take a bottle of water with you if you plan to walk quite a long time. ●If your path is rough, protect your ankles. Consider wearing a comfortable bandage for support. 小题1:According to the text, which of the following is correct? A.Wearing a piece of reflective clothing can make you look smart. B.Moving both arms while walking can help you lose more weight. C.You should buy shoes with a little extra space for your smaller foot. D.Losing weight by walking is always easy and effective without any danger. 小题2:What are possibly necessary if you walk through our town and then up a hill along a winding path on a hot evening? a. good walking shoes      b. reflective clothing         c. light dumb-bells d. a flashlight            e. a bandage                  f. a bottle of water A.a, b, c, d, e, f B.a, c, d, e, f C.a, b, d, e, f D.a, d, e, f 小题3:What can be inferred about the author of the text? A.He/She once got his/her legs injured while walking carrying light dumb-bells. B.He/She might live in a small town with dimly lit streets. C.He/She needs just a decent pair of walking shoes while walking. D.He/She is quite experienced in the exercise of walking.
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【单选题】_____ more than 100 million references to the word“tuhao” on social media since early September.
A.
It has been
B.
There is
C.
There have been
D.
They are
【判断题】双绞线是由两根铜芯线相互缠绕而成的,其缠绕方式是随机的,并无特别方式。
A.
正确
B.
错误
【单选题】More than one hundred students ___ been sent to Japan since 2000.
A.
have
B.
has
C.
are
D.
is
【简答题】已知集合P={x|2x 2 -3x+1≤0},Q={x|(x-a)(x-a-1)≤0}. (1)若a=1,求P∩Q; (2)若x∈P是x∈Q的充分条件,求实数a的取值范围.
【简答题】已知点 、 , 为原点,且 , ,则点 的坐标为 (    ) 、 、 、 、
【单选题】1 体系的下列各组物理量中都是状态函数的是: ( )
A.
T , p , V , Q
B.
m , V m , C p , ∆ V
C.
T , p , V , n
D.
T , p , U , W
【单选题】成年男性导尿时,插入导尿管的长度为
A.
24~26cm
B.
22~24cm
C.
20~22cm
D.
18~20cm
E.
16~18cm
【判断题】电脑属于机器中的控制部分。
A.
正确
B.
错误
【简答题】已知点A(3,3),O 为坐标原点,点P( )坐标 满足 则 方向上的投影的取值范围是 .
【判断题】老师可以在视频中插入一个测验并随机放置在视频中任何一个位置
A.
正确
B.
错误
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