T省2011年完成全社会固定资产投资额7441.71亿元，比上年增长30.3%，人均投资达到27080.41万元。其中，固定资产投资(不含农户)为7221.64亿元，增长30.4%。2007—2011年全社会固定资产投资同比增长速度[*]在固定资产投资（不含农户）中，第一产业完成投资197.07亿元，增长1.1倍；第二产业完成投资4041.63亿元，增长27.2%；第三产业完成投资2982.94亿元，增长31.7%。全年完成工业投资3993.39亿元，增长27.1%，增幅低于全部投资增速3.2个百分点，对全社会投资增长的贡献率达55.3%。全年民间投资达到5194.25亿元，民间投资的比重达到71.9%，比上年提高4.9个百分点。2011年全省固定资产投资（不含农户）及其增长速度 单位：亿元[*]全年完成非国有固定资产投资5461.53亿元，增长48.1%，占固定资产投资总额的75.6%。其中，完成私营企业投资1802.46亿元，增长1.1倍。全年新建项目完成投资2515.89亿元，同比增长31.4%；扩建项目完成投资1420.50亿元，增长22.5%；改建和技术改造项目完成投资1773.09亿元，增长41.8%。全年完成房地产开发投资1165.39亿元，增长26.5%。商品房竣工面积1656.17万平方米，下降18.4%；商品房销售建筑面积2364.25万平方米，下降0.7%。其中，销售住宅面积2060.73万平方米，下降2.1%。

2011年，非国有固定资产投资占固定资产投资总额的比重为（ ）。

A．75.6%

B．24.4%

C．10.8%

D．71.9%

Pigs are always considered dirty animals because they roll in mud．But in fact they prefer  being quite clean．They cover themselves with mud to help stay cool．During cooler weather,  they prefer to stay clean．So do elephants,who also cover themselves in dust or mud to keep cool． When they find a place with clean water they will take a bath，using their long noses to give  themselves—or each other—a nice shower

Some animals use dust to get clean．Chinchillas (南美洲栗鼠) have very fine fur． They don`t like to take water baths because water is not warm enough for them．So, instead, they roll  around in fine dust．The dust helps to keep their fur and skin dry．This protects them from disease

Usually, a small bird is a light meal for a crocodile．But when a crocodile wants its teeth  cleaned．it lies on the ground with its mouth open．The crocodile bird goes in and picks out any  parasites(寄生虫)between the crocodile`s teeth or under its tongue．The crocodile gets its mouth cleaned，and the crocodile bird gets dinner．

You wouldn`t think fish would need baths．But some undersea parasites live under the  fish`s skin．“Cleaner”fish，like the wrasse(隆头鱼)，help take them away．The wrasse stands on its head and dances to signal a big fish that it is ready to go into the cleaning business．The big fish will stop moving and open its mouth wide so the wrasse can swim inside and pick out  parasites and bits of food．

小题1:The passage is mainly about how animals         ．

A．stay clean

B．help each other

C．get their food

D．Take baths小题2:What can we learn from the first paragraph about pigs?

A．They can help each other take baths．

B．They are dirtier during cooler weather．

C．They prefer taking baths to rolling in mud．

D．They like to stay cool and clean．小题3:Chinchillas use dust to get clean for the following reasons EXCEPT that         ．

A． dust can dry their fur and skin

B．They are not good at swimming

C．Water is too cold for them

D．Dust is good for their health小题4:From Paragraphs 3 and 4，we earl know that         ．

A．some animals can get clean from others`help

B．Most animals are friendly to each other

C．small animals couldn`t get food from big ones

D．All of the animals prefer to stay clean小题5:We can infer from the last paragraph that the wrasse

A．is often eaten by other fish

B．1ikes under other fish`s skin

C．is a small kind of fish

D．1ikes taking baths