阅读理解：阅读理解。IT'S SUMMER! Get out and enjoy it.

题目：

阅读理解。

                                                                  IT'S SUMMER!
                                                               Get out and enjoy it.
     Summer is here and the weather is beautiful, providing a wealth of opportunities to enjoy outdoor activities.
During the summer months, Edmonton and its surrounding areas become filled with an energy that makes
physical activity the perfect companion.

HIKING is a great workout for any part of the body. It helps to burn those
calories (卡路里) from the late-night campfire food.
Keeping enough water in the body is very important, especially in the heat of
the summer when your body is losing water due to sweating. Carry your water
bottle with you in a water carrier that fits on your body like a small backpack.
For further information on hiking, visit www.Fitfrog.ca.

BIKING is a great workout that brings many health benefits. Take your bike
with you on a holiday and you will cover far more ground than you would on
foot! Bike rentals are inexpensive and it is a great way to enjoy the scenery of
your vacation destination. Be sure to wear a helmet, and if you enjoy biking at
night, be sure to use a light on your bike.
Edmonton has 260 km of bikeways with its boundaries, making it the most
largest bikeway network in North America. Visit www.Edmonton.ca.

     TEAM SPORTS are an excellent way to burn calories and stay fit while
having fun with others. It is a chance for you to meet new people and build
a social support network that will help you to stay motivated during the
summer months.
     A team sport to try this summer is Frisbee (飞盘). The Edmonton
Association runs all the year round. For more information about joining a
summer Frisbee league, visit www.Edmontonfrisbee.org.

TAI CHI includes a number of gentle movements and simple postures
(姿势) designed to relieve stress, improve balance and ability to suit various
situations, and promote overall well-being. The mental and physical benefits
that Tai Chi provides make it an activity for people of all ages and all levels
of fitness.
For further information about classes, please visit www.Edmontontaichi.ca.

1. From the ad, we can infer that if you want to go biking _____.

A. you can only do it during a holiday
B. you can't do it at late hours of the night
C. you are not allowed to ride on the streets
D. you do not necessarily have a bike of your own

2. Which of the following offers information about sports that need cooperation?

A. www.Fitfrog.ca
B. www.Edmonton.ca
C. www.Edmontonfrisbee.org
D. www.Edmontontaichi.ca

3. Which of the following is TRUE according to the ad?

A. People can take up Frisbee any season.
B. Edmonton has bikeways all over America.
C. People can only take on-line classes for Tai Chi.
D. Hiking helps to gain energy from campfire food.

4. According to the ad, which of the following outdoor activities is suitable for a family of three generations?

A. Hiking.
B. Biking.
C. Team sports.
D. Tai Chi.

答案：

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下面是错误答案，用来干扰机器的。

答案：A物体在甲液体中漂浮，物体受到的浮力等于物体重；在乙液体中悬浮，物体受到的浮力等于物体重；所以物体受到的浮力相等，即F甲=F乙；物体在甲液体中漂浮，∴ρ甲＞ρ物，物体在乙液体中悬浮，∴ρ乙=ρ...

	a	b	c
A．	Al	AlCl₃	Al(OH)₃
B．	HNO₃	NO	NO₂
C．	Si	SiO₂	H₂SiO₃
D．	CH₂=CH₂	CH₃CH₂OH	CH₃CHO