问题 解答题

随着人民生活水平的不断提高,我市家庭轿车的拥有量逐年增加,据统计,某小区2006年底拥有家庭轿车64辆,2008年底家庭轿车的拥有量达到100辆。

(1)若该小区2006年底到2009年底家庭轿车拥有量的年平均增长率都相同,求该小区到2009年底家庭轿 车将达到多少辆?

(2)为了缓解停车矛盾,该小区决定投资15万元再建造 若干停车位,据测算,建造费用分别为室内车位5000元/个,露天车位1000元/个,考虑到实际因素,计划露天车位的数量不少于室内车位的2倍,但不超过室内车位的2.5倍,求该小区最多可建两种车位各多少个?试写出所有可能的方案。

答案

解:(1)设家庭轿车拥有量的年平均增长率为x,则:64(1+x)2 =100,

解得:(不合题意,舍去),

∴100(1+25%) =125,

即该小区到2009年底家庭轿车将达到125辆;

(2)设该小区可建室内车位a个,露天车位b个,

则:

由①得:b= 150-5a,代人②得:

∵a是正整数,

∴a=20或21,

当a=20时,b=50,

当a=21时,b=45,

∴方案一:建室内车位20个,露天车位50个;

方案二:建室内车位21个,露天车位45个。

阅读理解

Cold weather can be hard on pets, just like it can be hard on people. Sometimes owners forget that their cats are just as used to the warm shelter as they are. Some owners will leave their animals outside for a long period of time, thinking that all animals are used to living outdoors. This can put their pets in danger of serious illness. There are things you can do to keep your animal warm and safe.

Keep your pets inside as much as you can when the weather is bad. If you have to take them out, stay outside with them. When you’re cold enough to go inside, they probably are too. If you must leave them outside for a long time, make sure they have a warm, solid shelter against the wind, thick bedding, and plenty of non-frozen water.

If left alone outside, dogs and cats can be very smart in their search for warm shelter. They can dig into snow banks or hide somewhere. Watch them closely when they are left outdoors, and provide them with shelter of good quality. Keep an eye on your pet’s water. Sometimes owners don’t realize that a water bowl has frozen and their pet can’t get anything to drink. Animals that don’t have clean and unfrozen water may drink dirty water outside, which may contain something unhealthy for them.

小题1:What do we learn about pets from Paragraph 1?

A.They are often forgotten by their owners.

B.They are used to living outdoors.

C.They build their own shelters.

D.They like to stay in warm places.小题2:Why are pet owners asked to stay with their pets when they are out in cold weather?

A.To know when to bring them inside.

B.To keep them from eating bad food.

C.To help them find shelters.

D.To keep them company.小题3: If pets are left on their own outdoors in cold weather, they may ___.

A.run short of clean water

B.dig deep holes for fun

C.dirty the snow nearby

D.get lost in the wild小题4:What is the purpose of this text?

A.To solve a problem.

B.To give practical advice.

C.To tell an interesting story.

D.To present a research result.

问答题 简答题