采购员计划去下列省区采购水果，其正确的是（ ） A．去广东采购苹果 B．去陕西采

下列原始人类遗址，不是反映农耕文化的是  [ ]

A．北京人遗址

B．半坡遗址

C．河姆渡遗址

D．大汶口遗址

下图是A、B两个细胞结构模式,请根据题意回答问题。

（1）属于动物细胞应是          细胞。两种细胞的主要区别是植物细胞有____________、___________、______________。

（2）进行光合作用的结构是[  ]         ，进行呼吸作用的结构在[  ]        中。

（3）细胞的遗传信息库是                  。

（4）B细胞进行分裂时，先分裂          ，最后形成             。

下图为一位同学的课堂笔记，记录了对某一历史事件的不同评价。据此，推断他学习的内容是

A．太平天国运动

B．义和团运动

C．辛亥革命

D．北伐战争

Section B

Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need

A. agree          B. suffer        C. system       D. notice        AB. through  

AC. dangerous     AD. space       BC. limited     BD. absorbs      CD. let out

For years scientist have been worried about the effects of air pollution on the earth’s natural conditions. Some believe the air inside many houses may be more    41    than the air outside. It may be one hundred times worse.

Indoor air pollution can cause a person to feel tired, to    42     eye-pain, headache and other problems. Some pollutants can cause breathing disorders, diseases of blood and even cancer. Most scientists    43    that every modern house has some kind of indoor pollution. People began to    44    the problem in the early 1970s, when it was that builders began making houses and offices which did not waste energy. To do this they built buildings that    45    the flow of air between inside and outside. They also began using man-made building materials. These materials are now known to    46    harmful gases. As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control    47    for building green plants. Scientist do not really know how plants control air pollution. They believe that a plant’s leaves take in the pollutants. In exchange the plant produces oxygen    48    its leaves and through its tiny organizations on its roots. Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square meters of space. Studies of different plants show that each    49    different chemicals. So the most effective way to clean the air is to use different kinds of plants. Having green plants inside your house can make it a prettier and healthier place.

气体的状态参数是压力、温度和（）等。

A、体积

B、重量

C、熵

D、比容