常见黏土防渗体不包括（）。A.黏土斜墙 B.黏土堤顶 C.黏土铺盖 D.黏土心墙

-Can you tell me why you learn English so well?

-It’s very simple._____ you work,______ grades you will get.

A．The harder;the best

B．The bard;the better

C．Harder;better

D．The harder;the better

Every year holidays Broughton teams up with Sopraviva Trekking to offer twelve days of unforgettable adventure in a tropical rain forest．Depending on where this year’s rain forest adventure is located, you may be going to Borneo, Malaysia ,Indonesia,or even to the greatest rain forest of them all, the mighty Amazonian forest．

You will fly with your fellow adventurers to one of our special base camps at the edge of the forest, where you will be given five days of survival training ,and talks on the local wildlife by trained and experienced experts．You will also go on walks which take you deeper and deeper under the forest canopy until on your final night you camp out in the rain forest itself．

Then you transfer by bus into the forest itself．If you go on one of the Asian holidays, you will have to walk the final miles to the camp site itself, to avoid disturbing the local ecology．All of the Sopraviva sites have been carefully built to conform with the latest regulations, and to cause the minimal amount of disturbance to the local wildlife．

From the camp ,you will go on daily walking tours to experience for yourself the beauty and diversity of the forests, and plants and vegetation that can be found nowhere else on the planet．Remember that these adventure holidays take you deep into the wilderness ,and they are not suitable for families with young children or for anyone who is not physically able to meet the demands of this kind of adventure．Also remember that in order to preserve the delicate ecological system that you will be walking through ,no more than two dozen guests can stay at any camp at one time, so if you want to go on one of these very special holidays ,you will need to book early!

小题1:If you want to go on the camp ,you will first have to          ．

A．attend talks on the local wildlife

B．have survival training

C．walk the final five miles

D．book beforehand小题2:What does the organizer of the camp mainly stress?

A．Disturbing the local ecology．

B．Preserving the forest environment．

C．Private possessions and possible dangers．

D．The survival training小题3:Go on daily walking tours and you’ll enjoy         ．

A．the wilderness

B．the Amazonian forest

C．the Asian forest

D．the forest canopy小题4:Which of the following people is/are allowed to enter the forest?

A．A family with young kids．

B．A person with physical problems．

C．Walking tourists．

D．Cyclists．小题5:Which of the following is true of the holiday camp?

A．It is free of charge

B．It lasts 12 days．

C．It is organized by Broughton．

D．It attaches little importance to ecology．

“什么是 世界史？”这一看似简单的问题，人们却经历了长时间的探索。阅读材料，回答问题。    

材料一 古希腊历史学家希罗多德所著《历史》主要记述希波战争希腊人的胜利，但涉及地中海及以外广大地区，这是希腊人已知的世界史。司马迁所著《史记》，主体是中国，但涉及范围几乎是欧亚大陆的一半，这是中国人已知的世界史。                                                      ——吴于廑《世界史?总序》

（1）根据材料一，概括希罗多德与司马迁“世界史”的共同特点？

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材料二    从十八世纪启蒙时代起，（世界）历史研究注重国别史（将世界 各国历史汇编成世界史），而不注重人类史。                                                  ——斯塔夫里阿诺斯《全球通史》

（2）根据材料二，结合所学知识回答18世纪以来的世界史有何发展？分析其原因。

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材料三 “（世界）历史自身是复杂众多的统一整体，它的各部分互相联系着，互相依靠着，互相制约着”。“我们不能把国别史之和看成世界史。” 

（3）材料三反映了何种史观？请结合二战后国际政治、经济、科技发展情况论述为什么“我们不能把国别史之和看成世界史”？

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（4）结合所学知识，运用材料三的观点，分析鸦片战争后近代中国经济发展的变化。

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对于接触孔进行寄生优化的措施是什么？

仿真中，生成PCCPCHRSCP时阴影衰落和穿透损耗该如何设置（都加、都不加抑或其中之一）？为什么？