问题 多项选择题 X型题

茯苓多糖增强机体免疫功能表现在()

A.使胸腺、淋巴结重量明显增加

B.提高巨噬细胞的吞噬功能

C.拮抗泼尼松对巨噬细胞功能的抑制作用

D.使玫瑰花环形成率增加

E.使小鼠脾脏抗体分泌细胞减少

答案

参考答案:A, B, C, D

填空题
完形填空
In the past, man did not have to think about the protection of his environment.  There were few people on the earth,  and natural resources(资源) seemed to be    26 .
Today things are 27 , the world has become too   28  . We are using up our natural resources too quickly, and at the same time we are  29 our environment with dangerous chemicals. If we continue to do this,  human life on the earth will not   30 .
Everyone 31 today that if too many fish are taken from the sea, there will soon be none left.  Yet, with modern fishing  32  , more and more fish are caught.  We know that if too many trees are cut down,  33 will disappear and nothing will grow on the land. Yet, we  34 to use bigger and more powerful machines to 35 more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. ___36,   in most countries wastes are 37  put into rivers or into the sea, and there are 38  laws to stop this. We know, too, that if the   39 of the world continues to rise at the present rate, in a few years there will not be enough food. What can we do to  40 these problems ?
If we eat more vegetables and less   41 , there will be more food available for everyone.  Land that is used to grow crops   42 five times more people than land where animals are kept.  Our natural resources will  43 longer if we learn to recycle them.  The world population will not rise so quickly if people use modern methods of birth 44   .
Finally, if we educate people to think about the problems, we shall have a better and cleaner     45  in the future.
小题1:
A.beautifulB.unlimitedC.rareD.valuable
小题2:
A.commonB.the sameC.changeableD.different
小题3:
A.crowdedB.smallC.dirtyD.busy
小题4:
A.protectingB.savingC.pollutingD.fighting
小题5:
A.breatheB.surviveC.drinkD.move
小题6:
A.wondersB.realizesC.considersD.discovers
小题7:
A.polesB.boatsC.methodsD.ideas
小题8:
A.mountainsB.the seaC.treesD.forests
小题9:
A.continueB.stopC.keepD.go on
小题10:
A.growB.plantC.saveD.cut down
小题11:
A.ThusB.HoweverC.ButD.Therefore
小题12:
A.stillB.evenC.alsoD.certainly
小题13:
A.too manyB.a fewC.someD.few
小题14:
A.productionB.pollutionC.population D.pronunciation
小题15:
A.workB.dealC.solveD.serve
小题16:
A.fruitB.meatC.fishD.grain
小题17:
A.feedsB.increasesC.suppliesD.helps
小题18:
A.useB.stayC.keepD.last
小题19:
A.controlB.bornC.planD.reward
小题20:
A.natureB.seaC.planetD.forest