以下关于视图的描述正确的是( )。A) 不能根据自由表建立视图 B) 可以根据查询

（）负责对施工项目部进场的安全设施以及安全文明施工措施的实施情况进行验收。

A.业主项目部

B.监理项目部

C.建设管理单位

D.项目安委会

（18分）．有下列烃的衍生物中：①溴乙烷    ②苯酚    ③乙醛    ④乙酸   ⑤乙醇    ⑥乙酸乙酯

（1）与新制的氢氧化铜悬浊液混合加热能生成红色沉淀的是        ，（填序号，下同）有关的化学方程式为：                              。

（2）与碳酸钠溶液反应的有        ；

（3）在一定条件下能发生消去反应的是             ；

（4）常温下能与浓溴水发生反应生成白色沉淀的是              ；有关的化学方程式为：                              。

（5）在一定条件能发生水解反应的是              ；

（6）写出由④生成⑥反应的化学方程式_____________________________；

反应类型是              。

阅读理解

     While nature lovers across the world wish all humans to realize the significance of their natural

surroundings, many Australians are turning caring for the environment into a way of life.

     Julie Astonis, an Australian housewife in Brisbane is one such example. Even though autumn is

approaching Australia's Brisbane in April, one can still watch colorful blooming (盛开的) flowers in

Julie's little garden, as she tells that in her community, "Each of us has a beautiful yard. The whole

community, from children to elderly people, takes care of the environment as if they are taking care of their own garden."

     "Gardening is the most popular club in our community," she says. "A lot of retired people don't just

regularly organize gardening lectures, but also personally visit families in the community to provide

gardening training. So you can see that flowers continue to blossom in our gardens throughout the year."

     Talking about her people's sense of caring for the environment, Julie says when people in the

community take along their dog, they always carry a garbage bag to deal with the dog's waste. "In our

community, you will never experience the embarrassment of stepping on the dirty waste while you are

walking on the grass," says Julie with a smile."Taking care of the the dog's waste can also help to develop

children's sense of responsibility!"

     As to protecting water resources, the Australian goverment has made strict rules for families. Julie says, "We certainly would not use tap water to water the flowers!"She says almost every family in her

community has a huge tank used to store rainwater, which is later used as the resource of all outdoor water use, including car washing and watering the garden. This year, they also asked people to connect the water tank with their toilets.

1.From the first three paragraphs we learn that_____

A. gardening is popular in most parts of Australia  

B. April is a great time for people to enjoy flowers

C. it's not easy to keep a garden without proper training

D. Julie's community has a deep sense of caring for nature

2.Why can flowers be seen all year round in Julie's community?

A. Gardening lessons are often given by professors.

B. Families are taught how to take care of their gardens.

C. The local government provides free gardening training.

D. There is enough rainwater to water the flowers regularly.

3.What do we know about Julie from Paragraph 4?

A. She takes pride in her community.    

B. She once stepped on a dog's waste.

D. She is quite in favor of raising a dog.  

D. She finds it embarrassing to walk on the grass.

4.From what Julie says in the last paragraph, we know___.

A. rainwater is not the best resource        

B. her community owns a public tank

C. her community makes full use of resources  

D. it is not necessary to water flowers very often

5.Whanvould be the best title for the text?

A. Love nature, the Australian way  

B.  How Australians save resources

C. How Australians lead their life    

D. Protect nature, a must of life

《汤姆逊分类法》

如图所示，两重物M₁和M₂的质量分别为m₁和m₂，两重物系在不计质量的软绳上，绳绕过匀质定滑轮，滑轮半径为r，质量为m，则此滑轮系统对转轴0之动量矩为：（）

A.A

B.B

C.C

D.D