1、A. Distinguishing different dot patterns. B. Figuring out different colours of dots.C. Putting the dots into differently coloured groups. D. Picking out the group with a larger number of dots.(2)For the bears, the task was easier when.A. the coloured dots were moving slowly B. the dot patterns were
2、regular in shapeC. the dots followed a path on the screen D. more dots covered a larger coloured area(3)What may explain the bears high degree of intelligence?A. They learn skills from other animals. B. They face life challenges on their own.C. They feed on a diverse range of food. D. They have comp
3、lex social networks.(4)What can be a suitable title for the text?A. Bears Taught to Distinguish Colours B. New Evidence of Bear Intelligence FoundC. Three Bears Learned How to Count D. The Smartest American Black Bear BrutusPassage 2(2021山东模拟)Scientists in Italy are investigating the mysterious appe
4、arance of pink glacial ice in the Alps, caused by algae(藻类) that accelerate the effects of climate change. There is debate about where the algae come from, but Biagio Di Mauro of Italys National Research Council said the pink snow observed on parts of the Presena glacier(冰川) is likely caused by the
5、same plant found in Greenland. The alga is not dangerous, it is a natural phenomenon that occurs during the spring and summer periods in the middle latitudes but also at the Poles, said Di Mauro, who had previously studied the algae at the Morteratsch glacier in Switzerland. The plant, known as Ancy
6、lonema nordenskioeldii, is present in Greenlands socalled Dark Zone,where the ice is also melting. Normally ice reflects more than 80% of the suns radiation back into the atmosphere,but as algae appear, they darken the ice so that it absorbs the heat and melts more quickly. More algae appear as the
7、ice melts more rapidly, giving them vital water and air and adding red colors to the white ice at the Passo Gavia, altitude 2618 metres(8590 feet).Everything that darkens the snow causers it to melt because it accelerates the absorption of radiation, said Di Mauro.We are trying to quantify the effec
8、t of other phenomena besides the human one on the overheating of the Earth, said Di Mauro, noting that the presence of hikers and ski lifts could also have an impact on the algae. Tourists at the glacier expressed their lament to the impact of climate change. Overheating of the planet is a problem,
9、the last thing we needed was algae, said tourist Marta Durante. Unfortunately we are doing severe damage. We are already at the point of no return, I think. Elisa Ponni from Florence said she felt the Earth was giving us back everything we have done to it.2020 is a special year: terrible things have
10、 happened, she said. In my opinion, atmospheric phenomena are worsening. Climate change is increasingly evident.(1)What is special about the present glaciers in the Alps?A. It results in more natural disasters. B. It presents an unusual colour.C. It becomes more mysterious than ever. D. It has been
11、covered with various plants.(2)Which of the following can best describe the relationship between ice and algae?A. Algae darkens the ice. B. Algae makes the ice melted.C. They interact with each other. D. Melted ice promotes the growth of algae.(3)Which of the following best explains lament underline
12、d in Paragraph 6?A. Depression. B. Anger. C. Confusion. D. Embarrassment.(4)What is the purpose of this passage?A. To explain a natural phenomenon. B. To introduce a rare and unusual plant.C. To draw public attention climate change. D. To criticize the improper behaviors of mankind.Passage 3(2020吉林模
13、拟)Even if youve never been to Phoenix, you know this about the place: Its hot But that doesnt stop hikers from attempting the 1.3mile trek(跋涉)to the top of the citys famed Camelback Mountain Signs warn that the trail is extremely difficult If you continue, a posted checklist suggests at least a lite
14、r of water per person And if you keep climbing, another sign farther up declares;If youre halfway through your water turn around! Unfortunately, many people do not pay attention to the warnings Fortunately, Scott Cullymore does The 53yearold man hikes up and down Camelback a couple of times a day gi
15、ving out cold bottles of water to wornout hikers He has helped so many hikers that he has earned a heavenly nickname: the Water Angel Id like a more manly name, but, you know, he told azfamily, com Cullymore was on Camelback Mountain one day in 2015 when a British tourist died after being lost for n
16、early six hours in the July heat That experience inspired him to start helping people caught unaware by Arizonas unforgiving version of Mother Nature, They underestimate the mountain, and they overestimate what they can do,and they get themselves in trouble, he told the Arizona Republic If a hiker h
17、as a red face and is not sweating anymore, Cullymore reaches into his insulated (隔热的)backpack, pulls out a frosty bottle, and hands it to the person Its misleading that were in the middle of the city You can die up here, and no one would know One hiker who received Cullymores water agrees You think
18、you know the heat,but then you get out here in the desert and it surrounds you like a blanket, he said,pointing to Cullymore, but we are lucky, we run into this good man here, And with that, the Water Angel goes in search of another hiker in need(1)What is the purpose of the signs along the hike way
19、?A To show the trek is difficult B To warn hikers to take enough waterC To frighten people to give up D To avoid hikers getting lost(2)What does Scott Cullymone think of his nickname?A Its womanish B Its manly C Its ironic D Its appropriate(3)Who will Scott offer his help to?A Anybody he meets B Tho
20、se in the middle of the trekC Anyone in need of water D Those who sweat a lot(4)What can be the best title of this text?A A DesertLike Mountain B Fighting against Heat C Necessities for Hiking D Water AngelPassage 4(2020汉中模拟)t stop hikers from attempting the 1.3mile trek (跋涉)to the top of the city I
21、f you continue, a posted checklist suggests at least a liter of water per person And if you keep climbing, another sign farther up declares:re halfway through your water, turn around! Unfortunately, many people do not pay attention to the warnings Fortunately, Scott Cullymore does The 53yearold man
22、hikes up and down Camelback a couple of times a day, giving out cold bottles of water to wornout hikers He has helped so many hikers that he has earned a heavenly nickname: the Water Angel he told azfamilycoms unforgiving version of Mother Nature They underestimate the mountain, and they overestimat
23、e what they can do, and they get themselves in trouble,s misleading that were in the middle of the city You can die up here, and no one would know One hiker who received CullimoreYou think you know the heat, but then you get out here in the desert and it surrounds you like a blanket, he said, pointing to Cullymore, but we are lucky, we run into this good man hereA
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