日本文明是在什么基础上逐渐形成的[ ] A．在吸收中国文化的基础上 B．在吸收朝

除夕之夜，冰城哈尔滨是热闹的冰灯游园会，而广州则是热闹的花市，这是因为（　　）

A．我国所跨的经度范围广

B．我国所跨的纬度范围广

C．我国地处亚洲东部，太平洋西岸

D．我国的面积广大

阅读理解

     Several years ago, the mayor of Chicago, Illinois, visited Germany, a leader in green roof design.

Later he decided to have vegetation planted on Chicago City Hall. Today, the tops of many other

buildings also look like parks. In Canada, the Coast Plaza Hotel in Vancouver has a forest on its roof.

New York City has an unusual example farm for hydroponics. The farm is on a boat called the Science

Barge. Rainwater and river water are used to grow lettuce, tomatoes, cucumbers and peppers. The

farm shows the possibilities for designing rooftop systems.

     Green roofs are designed to save energy and capture rainwater. Rooftops covered with plants help

keep buildings cool. They can extend the life of a roof. And they can reduce water running off into

streets and storming water systems.

     Experts say green roofs usually do not get much above 27?. So temperatures might not be a problem

for growing. But rooftop gardeners have to be careful not to put too much weight on the roof. This is

true whether plants are grown in soil or water.

     Earlier in 2008, researchers in Texas reported that green roofs can reduce a building's air conditioning

costs by about onefifth compared to blacktop roofs.  But they also reported that not all green roofs

perform equally well. They found that designs differ in their ability to keep buildings cool and to capture

rainwater. The researchers put experimental roofs on top of metal insulated (隔热的) boxes, to recreate

green roof conditions. The study compared products from six companies to help businesses understand

how to improve their designs. Each rooftop had sixteen different kinds of plants native to Texas. The

researchers say the presence of native plants likely helped all the green roofs capture water better

compared to sedums. Sedums are plants that need little water and often are used on green roofs. The

native plants could take in more water and release more of it to the atmosphere.

1. The author gave Paragraph 1 to ________.

A. tell us what is green roof design

B. tell us Germany is the country that leads or guides the  green roof design

C. introduce some famous hotels in the world

D. lead to the topic of the passage

2. The advantages of green roofs are mentioned in the passage  EXCEPT ________.

A. changing the local weather

B. prolonging the roof's life

C. keeping the house cool

D. reducing the house's air conditioning costs

3. According to the passage, which conclusion is WRONG?

A. Sometimes green roofs may break down the house.

B. Not all the green roofs can reduce the building's air  conditioning costs equally.

C. Different designs of green roofs have different effects on     buildings.

D. Sedums are a kind of plants native to Texas.

4. The experiment is mentioned in the last paragraph ________.

A. to find out how many different plants in Texas

B. to show us how to design green roofs

C. to introduce a kind of roof made of metal

D. to provide proofs to improve the design of green roofs

证券被调整出标的证券范围的，在调整实施前未了结的融资融券合同仍然有效.

尿沉渣中的吞噬细胞来自（）

A.红细胞

B.中性粒细胞

C.淋巴细胞

D.肾小管上皮细胞

E.单核细胞

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