脑桥病变的最特征性临床表现是（）。 A.受损范围广泛 B.常有剧烈面痛 C.瞳孔常散

阅读理解。

     Plants are very important living things. Life could not go on if there were no plants. This is because

plants can make food from air, water and sunlight. Animals and men can't make food from air, water and

sunlight. Animals get their food by eating plants and other animals. Therefore, animals and men need plants

in order to live. This is the reason why we find so many plants around us. 　　

      If you look carefully at the plants around you, you will find that there are many kinds of plants. Some

plants are large while others are small. Most plants are green. 　　

     Some plants have many small leaves. Others have only a few. There are many kinds of leaves. Leaves

are of different shapes and colors. 　　

     Leaves are also different in other ways. Some leaves have long thin parts at the end, we call them leaf

stalks, some have short leaf stalks, others even have no leaf stalks. The leaf edges are also different. Some

leaves have smooth (平滑) edges. Some have wave-shaped edges. Others have edges like the teeth of

a saw. (锯子)

1. Which of the following shows the right relation (关系) according to the first paragraph? [ ]

A.

B.

C.

D.

2. Plants are important because _____. 　[ ]

A. we need to eat plants every day

B. men can't live without plants

C. we can see so many plants around us

D. animals eat plants as their only food 　

3. We know from the passage that _____. 　　[ ]

A. all leaves have leaf stalks 　　

B. all leaves have smooth edges 　　

C. plants are different in shapes but have the same color 　　

D. leaves are different in shapes and colors 　　

4. The underline word "leaf stalks" in the last paragraph means _____. 　　[ ]

A. 叶边

B. 叶纹

C. 叶柄

D. 叶尖 　　

5. The main idea of the passage is _____. 　　[ ]

A. how plants help men and animals 　　

B. plants are important and they are quite different 　　

C. plants are more important than air, water and sunlight 　　

D. why we find so many plants around us

厄尔尼诺和拉尼娜是热带瀿海洋和大气相互作用的产物，拉尼娜的到来将对全球气候产生相反的影响，由厄尔尼诺现象造成的许多反常气候就会改变。美国沿海遭受飓风袭击的可能性会上升，大洋洲大陆东部可能发生洪水，南美和非洲东部地区可能出现干旱，南亚将出现猛烈的季风雨，英国气温将会下降，大西洋西岸可能提前出现暴雨和大雪，并使该地区的产粮区遭受破坏性旱灾，东亚的雨带将往北移，秋冬季雨水将会增多。拉尼娜在将冷水从海底带到水面的同时，也把海洋深层营养丰富的物质带到水面加快浮游植物和动物繁殖，将使东太平洋沿岸国家渔业获得丰收。
以下除哪项外，都是上文所描述的拉尼娜现象可能带来的影响( )

A．非洲某些地区的干旱不但没有缓解，而且有加重的趋势，非洲一些国家的生活仍然艰难

B．澳大利亚西部可能发生洪水，对该地区的牧业将产生不良的影响，世界羊绒的价格可能上涨

C．由于冬季雨水比较充沛，我国北方冬小麦的生长条件得到改善，小麦产量将会有所增加

D．墨西哥、智利等国的渔业将走出多年徘徊的局面，世界鱼产品的价格有可能下降

透平机组运行过程中，机组润滑油温度应控是在在（）、油压在（）。

取耳印时，耳模膏的凝固时间是（）。

A.5-10min

B.2-3min

C.10-15min

D.15-20min

E.3-5min