商业银行应当严格按照会计制度正确核算和确认各项代理业务收入，坚持（），防止代理收入被

对于违反会计法规的行为，县级以上人民政府财政部门在责令限期改正的同时，可以对单位并处（ ）罚款。

A．1000-30 000

B．2 000-40 000

C．3 000-50 000

D．5 000-10 000

Planting trees around poultry farms can improve air and water quality -- and relations with neighbors. Research has shown that just three rows of trees near poultry houses can reduce the release of dust and ammonia(氨). They can also reduce the strong smell of ammonia gas.

The trees take dust, ammonia and odors in their leaves. They also provide shade from the sun, so they reduce cooling costs in summer. And they act as a windbreak, so they reduce heating costs in winter. Trees can also improve water quality around farms by removing pollutions from soil and groundwater.

Several years ago, people were objecting to the odor of poultry farms on the Delmarva Peninsula in the eastern United State s. Delmarva is where the states of Delaware, Maryland and Virginia come together. Two thousand farms there can each house an average of seventy-five thousand chickens.

Traditionally the farms used windows to provide fresh air in the chicken houses. Farmers rarely planted trees or tall crops around the buildings, so there would be no barrier to the airflow. But then farms began to use new ventilation systems. Instead of windows, the new systems used tunnel fans to circulate air. The fans directed airflow from the poultry houses toward the homes of neighbors.

Researchers began dealing with the problem in two thousand. They found that over a period of six years, planting three rows of trees reduced total dust and ammonia by more than half. And they found that smells were reduced by eighteen percent.

Farmers may think trees will take too long to grow and be effective. But some trees can grow quickly. At least one-third of the Delmarva farms have planted trees, technically known as vegetative environmental buffers. The idea offers a way to cut pollution, save money and energy, and make the neighbors happy.

小题1:The second paragraph mainly tells us ______.

A．planting trees as much as possible

B．the advantages of trees

C．how to reduce heating costs

D．why trees are received小题2:The word “odor” in paragraph 3 means ______.

A．plant

B．smell

C．height

D．water小题3:The farms on the Delmarva Peninsula used to use ______ in chicken houses to provide fresh air.

A．trees

B．tunnel fans

C．windows

D．poles小题4:It can be learned from the last two paragraphs that ______.

A．three rows of trees are really good to the environment

B．researches began to realize the problem in 2000

C．most farmers show interest in planting trees

D．the trees growing quickly can be cut off in a few years

图为研究物质比热容的实验装置，两个相同的烧杯中分别盛有________相等、初温相同的水和煤油，用两个相同的电加热器对其加热。实验时为比较水和煤油吸热本领的大小，我们可以加热相同的时间，观察___________的不同；也可以 __________，在实验中电加热器加热时间的长短反映水和煤油的__________多少。

浓度均为0.1mol/L的Na₂CO₃、H₂SO₄、Ba（OH）₂三种溶液，若以不同顺序将体积相等的三种溶液中的两种混合起来，过滤生成的沉淀，再将滤液与第三种溶液混合，最终所得的溶液（　　）

A．不可能呈酸性

B．不可能呈碱性

C．不可能呈中性

D．一定呈中性

某住宅小区共有住宅400套，已售出并交付300套，其中四套住房登记为王海，其余一人一套；已售出未70套；未售出30套。由街道办事处组织成立了首次业主大会会议筹备组。筹备组完成了《业主大会议事规则》和《管理规约》的草拟，确定了业主委员会委员候选人名单等工作，拟召开首次业主大会会议。

首次业主大会筹备组组长由（）代表担任。

A、业主

B、物业服务企业

C、街道办事处

D、居民委员会