上海英语模拟试卷6
II. Grammar and Vocabulary
Section A
Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, u one word that best fits each blank.
Deep-Sea Microbes (微生物)May Be Missing Link in Search for Origin of Complex Life
Let us introduce Thor, Loki, Odin and Heimdall—our microbial ancestors dating back two billion years. A team at Uppsala University, Sweden has discovered veral microbes carrying genes (21) ________ were previously thought to be unique to more complex life forms, including humans.
戆直
The single-celled microorganisms, called archaea, were discovered in substances (22) ________ (collect) at ven sites around the world, including hot springs in Yellowstone National Park. The four species in question, named after Nor gods and known as 'Asgard archaea', are as different from one another (23)________ a tree is from a mushroom.
The finding supports a decades-old theory that complex life first (24) ________ (ari) when an archaeon consumed a bacterium, but the bacterium survived. The (25) ________ (result) arrangement proved to be beneficial to both, and the two previously parate organisms evolved (26)________ life forms with cells and complex internal structures, called eukaryotes. All plants and animals are eukaryotes.
"The things, which we thought made a eukaryote a eukaryote, are (27) ________ we're now finding in the new archaea/5 said rearcher Brett Baker. "We're esntially rewriting the textbook on basic biology.”
So far, the archaea (28) ________ (only identify) by piecing their genomes together usi
ng parate bits of gathered genetic material. The team's next goal is (29) ________ (grow) them in the lab.
"It would be great if we could isolate or grow Asgard cells, and study them under the microscope," said Thijs Ettema, a rearcher who was involved in the project. "I am convinced that this (30)________ (reveal) more important clues about how complex cells evolved. Finally, our microbial ancestry will be uncovered."waiting
Section B戽斗
Directions: Complete the following passage by using the words in the box. Each word can only be ud once. Note that there is one word more than you need.
A. cealess B. engineering C. inspire国庆快乐祝福语 D. issue E. reintroduction F. remble belladonnaG. scrubby日语五十音图发音 H. cret L.solution J. surrounding K. territory |
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学编程的好处Walk in a Beaver Wonderland
海词 Have gone back in time to a landscape not en in this comer of the world for the best part of 500 years. All around me are signs of intensive ____31____ not by humans, but by beavers (海狸).
Mark Elliott at the Devon Wildlife Trust is showing me round the wetland on the edge of Dartmoor, UK, where in 2011 the trust relead a pair of Eurasian beavers. "They're really busy at the moment," he says.谄谀取容
Before the relea, the area was a(n) ____32 ____woodland with a small stream running through it. But the beavers quickly got to work, building a lodge(窝), deepening the pond around it and damming the headwaters of the stream.
The area es a lot of rain, and water runs quickly off the 33 land, flowing into rivers and causing flash floods. But on beaver____34____ , the water is now held up in ponds, flowing out at a far more leisurely pace. Hardly anybody lives nearby, so flooding isn't a(n) ____35____, But it is a rious and growing threat elwhere. Judging from the rearch done here, beavers could be part of the ____36____ .
The creatures are known as ecosystem engineers. I can e signs of ____37____ beavering across every inch of the site. The stream has been turned into a ries of 13 large pools held back by dams made of sticks, mud and grass. The oldest dam does ____38 ____ a Neolithic (新石器时代的)earthwork, veral metres across and grasd over. It holds a rious amount of water. In total, dams on the site hold more than a million litres.
The team has kept the location of the project ____39 ____ to avoid people. Some are just keen to e the beavers for themlves, but others may wish to stop the trial becau they oppo the ____40 ____ of a troubling species.
工商管理学位
III. Reading Comprehension
Section A
Directions: For each blank in the following passage there are four words or phras marked A, B, C and D. Fill in each blank with the word or phra that best fits the context.
