对于当代大学生来说，英语四六级考试是大家在大学期间最熟悉的一门英语等级考试了。因为英语四六考试不分专业，所有考试都必须参加。对于正在备考英语六级的同学来说，大家除了要把基础知识学好以外，还要做大量的习题，那么真题就是最好的习题。下面，沪江小编就为大家总结出2017年6月的大学英语六级真题及答案解析。

Better Known As Mark Twain

The remarkable man went to a log-cabin schooluntil he was twelve years old. That was the end ofhis formal education. In spite of this, he became themost famous literary figure of his generation .

Mark Twain was born in a small Missouri village nearthe Mississippi River2 in 1835. At that time, AndrewJackson3 was the president of the country. AbrahamLincoln was still a young farm laborer in Illinois. The first railroad had been built seven yearsbefore. The Industrial Revolution was at hand. 4 The economic collapse of Americanprosperity, called the Panic of 1837, still lay ahead. This was also the literary period later calledthe“New England Renaissance ”

Mark Twain was not a healthy baby. In fact, he was not expected to live through the firstwinter. But with his mother’s tender care , he managed to survive. He had been born in a tinytwo-room cabin. Eight people lived together there . He had four brothers and sisters. A slavegirl lived with them too.

As a boy, Mark Twain caused much trouble for his parents. He used to play practical jokes on allof his friends and neighbors. The nature of his jokes often led to violence . He hated to go toschool, and he constantly ran away from home. He always went in the direction of the nearbyMississippi. He was fascinated by that mighty river. He liked to sit on the bank of the river forhours at a time and just gaze at the mysterious islands and the passing boats and rafts. Hewas nearly drowned nine different times. He learned many things about the river during thosedays. He learned all about its history and the unusual people who rode up and down5 it. Henever forgot those scenes and those people. He later made them part of the history of Americain his books Tom Sawyer and Huckleberry Finn6.

阅读自测

Ⅰ. This is the summary of the passage. Try to fill in the blanks with proper words :

Mark Twain was born in a small village near the __________River in 1835. He was not a healthybaby, so he was not expected to live __________ the first winter. Thanks to his mother’s__________care, he managed to survive . He has been born in a tiny two-room __________ . __________people lived together there. He had __________brothers and sisters and a girl livewith them too. When he was a boy, he used to play __________jokes on his friends andneighbors. He hated to go to school but was __________ by the mighty river. He learned allabout its history and __________the unusual people who rode __________ and __________it. Later in his works Tom Sawyer and he made them part of American history.

Ⅱ. Quizzes:

1. What has four eyes ( Ⅰ) but cannot see?

2. It is said that river is richer than any other things. Why?

参考答案:

Ⅰ. Mississippi / through / tender / cabin / Eight / four/ slave / practical / fascinated up / down /Huckleberry Finn

Ⅱ. 1. Mississippi. 2. Because on each side of the river,there is one bank.

Questions 56 to 60 are based on the followingpassage.

University of York biologist Peter Mayhew recentlyfound that global warming might actually increasethe number of species on the planet，contrary toa previous report that higher temperatures meantfewer life forms—a report mat was his own.

In Mayhew’s initial 2008 study，low biodiversity among marine invertebrates(无脊椎动物)appeared to coincide with warmer temperatures on Earth over the last 520 million years.But Mayhew and his colleagues decided to reexamine their hypothesis，this time using datathat were“a fairer sample of the history of life.”砌this new collection of found acomplete reversal of the relationship between species richness and temperature from whattheir previous paper argued：the number of different groups present in the fossil record washigher，rather than lower，durin9“greenhouse phases.”

Their previous findings rested on an assumption that fossil records can be taken torepresent biodiversity changes throughout history.Thisn’t necessarily the e thereare certain periods with y fossil some that are much more difficultto sample well.Aware of this bias.Mayhew’s team used data that standardized the number offossils examined throughout history and accounted for other variables like sea level changesthat might influence biodiversity in their new study to see if their old results would hold up.

Two years later，the results did not.But then why doesn’t life increasingly emerge onEarth as our temperatures get warmer?

While the switch may prompt some to assert that climate change is not hazardous toliving creatures，Mayhew explained that the timescales in his team’s study are huge--over500million years--and therefore inappropriate for the shorter periods that we might look at ashumans concerned about global wanning.Many global warming concerns are focused on thenext century.He said——and the lifetime of a species is typically one to 10 million years.

“I do worry that these findings vill be used by the climate skeptic community tosay‘look.Climate warming is fine。he said.Not to mention the numerous other things weseem to do to create a storm of threats to biodiversity—think of what habitat(栖息地)destruction，overfishing，and pollution can do for a species’viability(生存力).Thosethings，Mayhew explained，give the organisms a far greater challenge in coping with climatechange than they would have had in the absence of humans.

“If we were to relax all these pressures on biodiversity and allow the world to recover overmillions of years in a warmer my prediction is it would be an improvement inbiodiversity，”he said.So it looks like we need to curb our reckless treatment of the planetfirst，if we want to eventually see a surge in the number of species on the planet astemperatures get warmer.We don’t have 500 million years to wait.

56.What is the finding of Peter Mayhew’s recent study?

A.Higher temperature causes the low biodiversity of marine invertebrates.

B.Fossil record can represent a relatively believable history of life.

C.The number of fossils was higher during greenhouse phases.

D.Global warming might promote the richness of species on Earth.

57.What do we learn about Mayhew’s previous report?

A.It was based on his colleagues hypothesis about global warming.

B.It was contrary to what his team found in the recent study.

C.It was a complete reversal from his 2008 study about marine invertebrates.

D.It found evidence for the connections between biodiversity and temperature.

58.Why does Mayhew’s team use data that standardized the number of fossils?

A.They realize not all fossils can sample well to represent biodiversity changes.

B.They start to consider the variables that might influence biodiversity.

C.They want to check the previous findings with different research methods.

D.They believe sea level changes can lead to inaccurate fossil records.

59.Because of the huge timescales in his study，Mayhew believed .

warming is not hazardous t0 1iving creatures in a short time

study is not suitable to support short-term global warming

warming concerns should be focused on in the next century