解析：细节理解题。根据第二段的第二句“Across the Arctic，temperatures are rising faster than anywhere else in the world”以及本段的整体内容可知，不断上升的气温是北极圈树木北移的主要原因，即B项正确。
答案：B
6．What does the underlined word “this” in Paragraph 2 mean? A．To produce more seeds. B．To move northward.
C．To respond to the climate change. D．To protect themselves from the cold wind.
解析：代词指代题。根据画线词前的“Trees growing along the tree line must protect themselves from the cold wind”可知，画线词this指代的是本句中的“protect themselves from the cold wind”，即D项正确。
答案：D
7．What can be inferred from the last paragraph?
A．New trees can trap the snow，which may make the soil colder.
B．The trapped snow prevents new trees from producing more seeds.
C．New trees can make the surrounding air warmer.
D．New trees can bring more food and shelter to local animals. 解析：推理判断题。根据最后一段中的“New trees will provide shelters for some snow.Keeping the sun's rays from making the white surface disappear.Instead，the trees absorb the sun's heat.This warms the surrounding air”可推知，新树会让周围的空气更加温暖，即C项正确。
答案：C
8．The passage is most probably taken from ________．
A．a science report B．a health report C．a fashion magazine D．a children's magazine
解析：文章出处题。根据文章的整体内容可推知，本文主要研究的是气候变暖对北极圈植物的影响，故该文应选自科研报告，即A项正确。
答案：A
C(导学号59430082)
(2016·安徽马鞍山高三联考) At present，specialization has become an increasingly important factor in a great many careers. You find these careers in engineering，in production，in statistical work，and in teaching.But there is an increasing demand for people who are able to take in a great area at a glance，but perhaps do not know too much about any field.There is，in other words，a demand for people who are capable of seeing the forest rather than the trees，of making general judgments.We can call these people “generalists”．And these “generalists” are particularly needed for positions in administration，where it is their job to see that other people do the work，and where they have to plan for other people，to organize other people's work，and to begin it and judge it.
The specialist understands one field; his concern is with technique and tools.He is a “trained” man，and his educational background is properly technical or professional.The generalists and especially the administrators deal with people; his concern is with leadership，with planning，and with direction－giving.He is an “educated”man，and the humanities are his strongest foundation. Very rarely is a specialist capable of being an administrator.And very rarely is a good generalist
also a good specialist in a particular field.Any organization needs both kinds of people，though different organizations need them in different proportions.It is your task to find out，during your training period，into which of the two kinds of jobs you fit，and to plan your career accordingly.
Your first job may turn out to be the right job for you but this is pure accident.Certainly you should not change jobs constantly or people will become suspicious of your ability to hold any job.At the same time，you must not look upon the first job as the final job；it is primarily a training job，an opportunity to understand yourself and your fitness for being an employee.
【语篇解读】 本文为说明文。文章主要介绍了当前就业市场所需要的两种人才，即专业人才和全能人才。同时告诉读者不要把第一份工作作为一辈子都会做的工作，那只是一份用来对你进行培训的工作，只是一个让你了解自己及你所适合的工作的机会。
9．Nowadays，there is an increasing demand for ________． A．people whose educational background is either technical or professional
B．people whose job is to organize other people's work C．all－round people in their own fields
D．specialists whose chief concern is to provide administrative guidance to others
解析：事实细节题。由第一段第三句话及下文的进一步说明并结合段尾处的“to organize other people's work”可知答案选B项。
答案：B
10．The administrator is ________．
A．a “trained” man who is more a specialist than a generalist B．a man who sees the trees as well as the forest
C．a man who is an “educated” specialist D．a man who is very strong in the humanities
解析：事实细节题。结合第二段第三、四句的内容可知答案选D项。
答案：D
11．During your training period，it is important ________． A．to try to be a generalist B．to choose a profitable job
C．to find an organization which fits you
D．to decide whether you are fit to be a specialist or a generalist 解析：事实细节题。根据第二段最后一句“It is your task to find out，during_your_training_period，into which of the two kinds of jobs you fit，and to plan your career accordingly.”可知答案为D项。
答案：D
D
It doesn't look like the heart of a green revolution.The huge chimneys stick up above the line of pine trees and don't make for the most scenic view as you wander around the clear blue waters of the nearby lake.
But it is this power plant that has helped the small Swedish city of Vaxjo become arguably the greenest place in Europe.On closer observation，the only thing emerging from the chimneys is the faintest mists of steam.And inside it smells more like a sauna (桑拿) than a furnace (炉子)．That's because it is not oil fuelling the plant，but wood chip and other wood waste from the area's sawmills.And as well as generating electricity，it also supplies 90 percent of this southern Swedish town with heating and hot water.
The gases produced as the wood burns are changed into liquid form，and are purified before they reach the chimney.And instead of
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