【2015高考复习】任务型读写
If you can find a tree which has been cut down，you will e many rings，or circles，吃什么补脑子on the ba of the trunk.By learning to read the rings，you can find out about the tree's life.
The number of rings tells you how old the tree is.Each year，new wood is formed on the outside of the tree.This new wood is light in color when the tree is growing in spring and summer，and dark in winter when the tree is not growing much.So，if you count the rings of darkorlight colored wood，you can often find out how old the tree is.
You can also tell which years have been good years and which years have been bad years.When the lightcolored rings are very wide，it means that the tree has been growing quickly that year.If the rings are narrow，it has been growing slowly.If the rings on a tree trunk were greatly magnified，you would be able to e why the rings are lightcolored when the tree is growing quickly and darkcolored when the tree is growing slowly.The tree trunk is made up of microscopic tubes，like some pipes，carrying water from the soil，through the trunk，and up to the leaves.They are wide and thinwalled when the tree is gro
wing quickly and they are carrying a lot of water.They are narrow and stuck together when the tree is not growing so quickly.
电脑一体机好还是台式机好 When a tree is old，the tubes in the centre of the tree don't carry water.The walls of the tubes have become thick with materials which have stuck along them over the years，forming a kind of wood called“heartwood”．不知明镜里This kind of wood is darker in color than the young，growing wood on the outside of the tree.
You don't very often e whole tree trunks which have been cut across.But once you learn to read a cross ction of the wood，you can e much more in wood which has been ud to make boxes，hous and other things.
In most wood，instead of eing the trunk cut across，you are eing it cut along its length.Becau you don't e the whole tree，you can't tell how old it is.
Title：__20__of a Tree
General information | Old trees |
Items | Facts | Items | Facts |
Where can rings be en | On the __21__of a trunk | The tubes in the centre of the tree | Don't carry water |
The__22__of rings | Helps us know about its age | The walls of the tubes | 什么以为什么成语Become __23__； Form __赠汪伦的诗24__ |
__25__lightcolored rings | Show the tree grows quickly |
Narrow__26__ rings | Mean the tree grows slowly |
Microscopic tubes | Function | Carry__27__ |
Features | Wide and __28__when growing quickly |
Narrow and stuck together when growing __29__ |
| | | |
【语篇解读】 本文介绍了怎样从树的年轮来看树的生长情况和年龄。
20．Rings/Circles [从第一段可直接得出答案。]
21．ba [从第一段第一句可直接得出答案。]
22．number [从第二段第一句可直接得出答案。]
23．thick [从第四段第二句可直接得出答案。]
24．heartwood [第四段第二句可直接得出答案。]
25．Wide [第三段第二句可直接得出答案。]
26．darkcolored [第三段第四句可直接得知。]
27．water [第三段倒数第二句可直接得知。]
28．thinwalled [第三段倒数第二句可得知。]
29．slowly [从第三段最后一句not growing so quickly转换而来。]
【上海市虹口区2014模拟】任务型阅读
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. adapt B. natives C. identities D. cost-saving E. alert F. instead G. established H. practically I. route J. enrolled K. significant |
|
Officials at Boston College have made what may be a critical decision: they’ve stopped giving out new email accounts to incoming students. The officials realized that the students had already established digital 41 by the time they entered college, so the new email address were just not being ud, but, 42 , the college will offer forwarding (转发) rvices.
Starting next year, freshman 43 at Boston College won’t be given an actual email account complete with login and inbox, just an email address. This address, in the format 两个人玩的扑克牌
of johnsmith@bc. edu will simply forward mail to the student’s already 44 inbox, be it Gmail, Windows Live Mail, Yahoo Mail, AOL, or whatever el they may be using.
The college reached a smart decision after first looking into outsourcing （外包） their email to the cloud. While the Boston College decision may have been made for 45 reasons more than anything, we can easily imagine this as being the start of a new trend.
Can you even imagine a U.S. college student who didn’t have an email address of their own by the time they were a freshman? It’s 46 unheard of. Today’s students are digital
47 immerd (浸润) in technology from the day they were born. It simply doesn’t make n to give them yet another account to manage when they enter college.
By going this 48 , there are still some challenges to overcome, though. For example, a student who changes their email carrier will probably forget to 49 the institution to the change and could then miss out on 50 messages from the university with regard to their cours, scholarship, safety information, etc.
In the end, we think the decision Boston College made could easily be the start of a new trend. We’re sure the students like it, too.
【参考答案】
41. C 42. F 43. J 44. G 45. D 46. H 47. B 48. I 49. E 50. K
【四川省绵阳市2014高考英语一模试题】
An early invention by Albert Einstein has been rebuilt by scientists at Oxford University. They are trying to develop an environmentally friendly refrigerator that runs without electricity.
We all know that modern fridges cau damage to the environment. They work by using a kind of man-made greenhou gas called Freon (氟里昂), which is far more damaging than carbon dioxide.
Now Malcolm McCulloch, an electrical engineer at Oxford, is leading a three-year project to develop appliances that can be ud in places without electricity.
His team has completed a prototype (样机) of a fridge patented in 1930 by Einstein. It us
ed only pressurized gas to keep things cold. The design was partly ud in the first refrigerators, but the technology was dropped when more efficient compressors (压缩机) became popular in the 1950s. That meant a switch to using Freon.
Einstein's idea us butane (丁烷) and water and takes advantage of the fact that liquids boil at lower temperatures, when the air pressure around them is lower.
"If you go to the top of Mount Qomolangma, water boils at a much lower temperature than it does when you're at a level and that's becau the pressure is much lower up there," said McCulloch.At one side is the evaporator (蒸发器), a bottle that contains liquid butane. "If you introduce a new vapor above the butane, the liquid boiling temperature decreas and, as it boils off, it takes energy from the surroundings to do so," says McCulloch. "That's what makes it cold."
The gas fridges bad on Einstein's design were replaced by Freon-compressor fridges partly becau Einstein's design was not very efficient. But McCulloch thinks that by changing the design and replacing the types of gas ud it will be possible to quadruple (翻两番) the efficiency.
However, McCulloch's fridge is still in its early stages. "It's very much a prototype," he said. "Give us another month and we'll have it working."
72．According to the passage, an early invention by Albert Einstein _______.
A．has been rediscovered becau it costs much less and works more efficiently
B．is being redesigned becau it could be ud in places without electricity
C．has just been found to be energy-saving and environmentally friendly
D．will be fully made u of and become the fridge of the future
73．Which of the following is TRUE according to the text?
A．Freon was ud in fridges long before the 1950s.
感动作文600字 B．Freon is what makes current fridges big polluters.
C古埃及金字塔之谜．McCulloch thinks he could improve Einstein's design by using other types of vapors.
D．The fridge Malcolm McCulloch and his team designed will be put into production soon.
74．We can learn from the text that the prototype completed _______.
A．changed the air pressure around it
B．was tested on the top of Mount Everest
C．incread the liquid boiling temperature
D．ud only pressurized gas to keep things cold
75．McCulloch's words in Paragraph 6 _____.
A．rve as an explanation for the principle behind Einstein's fridge
B．give you the reason why Einstein's fridge was not efficient
C．tell you how to take advantage of low air pressure
D．show you how Einstein's fridge works
