It takes many things to make a snow ranger. The snow ranger must be in excellent physical condition. He must be a good skier and a skilled mountain climber He should have at least a high school education， and the more college courses in geology， physics， and related fields he has， the better.
He studies snow， terrain， wind， and weather. He learns the conditions that produce avalanches. He learns to forecast avalanches and to bring them roaring on down the mountainsides to reduce their killing strength. . The snow ranger learns to do this by using artillery， by blasting with TNT， and by the difficult and skillful art of skiing avalanches down.
The snow ranger， dressed in a green parka which has a bright yellow shoulder patch， means safety for people on ski slopes. He pulls the trigger on a 75 mm. Recoilless rifle， skis waist deep in powder testing snow stability， or talks with the ski area's operator as he goes about his work to protect the public from the hazards of deep snow on steep mountain slopes.
1. The snow rangers are employees of
A） the Forest Service.
B） the Resource Bureau.
C） the Tourist Board.
D） the Sports Bureau.
2.A snow ranger himself must be
A） a college graduate.
B） a physicist.
C） a geologist.
D） a mountaineer.
3. A snow ranger uses very powerful guns
A） to warn skiers of an approaching avalanche.
B） to signal for help in an emergency.
C） to create an avalanche.
D） to communicate with the ski area' operator.
4. What is the primary duty of the snow ranger？
A） To make sure ski area operators are following safety rules.
B） To predict and control avalanches in mountainous areas.
C） To check skis and repair them.
D） To forecast the weather.
5.The passage implies that a snow ranger
A） knows how to use a pistol.
B） must write lengthy reports on his work.
C） may travel many miles when he is on duty.
D） has a long working day.
第五部分：补全短文（每题2分，共10分）
阅读下面的短文，文章中有5处空白，文章后有6组文字，请根据文章的内容选择5组文字，将其分别放会文章原有位置，以恢复文章原貌。请将答案涂在答题卡相应的位置。
Don't rely on plankton to save the planet
Encouraging plankton growth in the ocean has been touted by some as a promising way to remove carbon dioxide from the atmosphere. ___1___.
Adding iron to patched of ocean can make plankton bloom temporarily. The microscopic organisms suck up dissolved carbon dioxide from the water， which in turn is replaced by carbon dioxide from the air. ___2___.
Jorge Sarmiento from Princeton and his colleagues developed a complex computer model to analyze how factors such as ocean chemistry and water circulation would affect the process if 160，000 square kilometers of ocean were seeded with iron for a month. ___3__.
In their scenario， which covers an area 10 times as big as the largest experiment of this kind ever proposed， fertilizing the ocean removes 1 million tons of carbon from the atmosphere—— just 0.2 percent of the carbon dioxide humankind spews out each month.
Rough estimates in the past have predicted similarly disappointing results. __4__ Says Sallie Chisholm， an environmental engineer from the Massachusetts Institute of Technology. "But the take-home message is the same. ___5___."
A. Its opponents argue， however， that it will stop global warming.
B. Its opponents fear that will damage the marine ecosystem， and now a computer model shows that the trick would also be remarkably inefficient.
C. As plankton die and settle on the ocean floor， their carbon is supposedly locked up in the seabed.
D. They found that 100 years later only between 2 and 11 percent of the extra carbon that was originally taken up plankton had actually been removed from the atmosphere.
E. "These are newer and better models，"
F. Ocean fertilization is not the answer to global warming.
第六部分：完型填空 （每题1分，共15分）
阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案，并涂在答题卡相应的位置上。
Captain Cook Arrow Legend
It was a great legend while it lasted，but DNA testing has __1__ ended a two-century-old story of the Hawaiian arrow carved from the bone of British explorer Captain James Cook__2__ died in the Sandwich Islands'in 1779.
“There is __3__ Cook in the Australian Museum，''museum collection manager Jude Philip said not long ago in announcing the DNA evidence that the arrow was not made of Cook'S bone.But that will not stop the museum from continuing to display the arrow in its__4__，”Uncovered：Treasures of the Australian Museum，“ which__5__include a feather cape presented to Cook by Hawaiian King Kalani'opu'u in 1778.
Cook was one of Britain's great explorers and is credited with__6__ the“Great South Land，''__7__ Australia， in 1 770.He was clubbed to death in the Sandwich Islands，now Hawaii
The 1egend of Cook's arrow began in 1 824 __8__ Hawaiian King Kamehameha on his deathbed gave the arrow to William Adams，a London surgeon and relative of Cook's wife，saying it was made of Cook's bone after the fatal__9 __ with islanders.
In the 1890s the arrow was given to the Australian Museum and the legend continued __10__ it came face=to-face with science.
DNA testing by laboratories in Australia and New Zealand revealed the arrow was not made of Cook's bone but was more __11__ made of animal bone.said Philp.
However， Cook's fans __ 1 2 __ to give up hope that one Cook legend will prove true and that part of his remains will still be uncovered.as they say there is evidence not a11 of Cook's body was __1 3 __ at sea in 1 779.“On this occasion technology has won"，”said Cliff Thornton，president of the Captain Cook Society， in a __14__ from Britain.“But I am __15__ that one of these days…one of the Cook legends will prove to be true and it will happen one day.''
词汇：
DNA n.脱氧核糖核酸
Hawaiian adj.夏威夷的
Uncovered adj.被发掘的
cape n.斗篷
credit v.把……归功于
club v.用棍棒打
1. A. finally B. firstly C. lately D. usually
2. A. whose B. who C. which D. what
，2017职称英语考试全真模拟试题理工类C级第二套