Vehicles made of fiberglass weigh those made of metal．( )A．much more thanB．little thanC．much thanD．much less than 题目和参考答案——青夏教育精英家教网—

10．A new study suggests that listening to music in the office improves the speed and accuracy of tasks such as data entry，proof reading and problem solving．
In an office-based experiment，88per cent of participants were found to produce their most accurate work when listening to music．The study also found that 81per cent completed their fastest work when music was played．
And it matters what type of music you listen to．For instance，if you're doing your tax returns，then classical music is the most effective as it improves maths skills．
Listening to Jessie Jor Justin Bieber could also improve your speed，with 58per cent of participants completing data entry tasks faster while listening to pop songs．
During proof-reading，dance music，such as David Guetta，had the biggest positive impact with participants increasing their speed by 20per cent compared to tests undertaken with no music at all．Dance music also had a positive effect on spell-checking with a 75per cent pass rate compared to 68per cent when no music was played at all．
The research，undertaken by Brighton-based Mind lab International，suggests that silent offices may be the least productive．
‘The Music Works experiment revealed a positive correlation between music and productivity-overall it showed that when listening to music，nine out of 10people performed better，'said Dr David Lewis，chairman of Mind lab International．
56．According to the passage，which of the following statements is NOT true？D
A．The research was carried out by Brighton-based Mind lab International．
B．When listening to music，ninety percent of the people performed better．
C．Music has a positive effect on work in the office．
D．David Guetta is the head of the experiment．
57．In the experiment when doing proof-reading with dance music on，the participants could increase their speed byD．
A.75per centB.81per centC.88per centD.20per cent
58．Supposing you are an office worker doing tax returns，what kind of music can improve your working efficiency？B
A．pop music．B．classical music．C．dance music．D．rock music．
59．The underlined word"correlation"in the last paragraph refers toA．
A．associationB．effectC．accuracyD．improvement
60．The main purpose of the passage is toC．
A．describe and argueB．inform and explain
C．compare and evaluateD．discuss and assess．

16．The oldest and most common source（来源） of renewable energy known to man，biomass is one of the most important forms energy production in the United States and elsewhere．Since such a wide variety of biomass materials is everywhere--from trees and grasses to agricultural and city--life wastes--biomass promises to play a continuing role in providing power and heat for millions of people around the world．
According to the Union of Concerned Scientists（UCS），biomass is a kind of renewable energy source that produces no carbon dioxide（二氧化碳），because the energy it contains comes from the sun．When plant matter is burned，it gives off the sun's energy．In this way，biomass serves as a sort of natural battery（电池） for storing the sun's energy．As long as biomass is produced continuously--with only as much grown as is used-the"battery"lasts forever．
According to the Energy Information Administration，biomass has been one of the leading renewable energy sources in the United States for several years running through 2007，making up between 0.5and 0.9percent of the nation's total electricity supply．In 2008--although the numbers aren't all in yet--wind power probably took over first place because of the rapid development of wind farms across the country．
Producing power from biomass helps reduce some 11million tons of carbon dioxide each year．Some homeowners also try to make their own heat by using biomass materials．Such practice may save homeowner's money，but it also produces a lot of pollution．So，the best way is to encourage power plants to use it．

72．Why is biomass considered as"a sort of natural battery"？C．
A．It burns merely plant matter．
B．It keeps producing electricity．
C．It stores the energy from the sun．
D．It produces zero carbon dioxide．
73．We learn from the text that in 2008A．
A．Wind power would be the leader of renewable energy．
B．there was a rapid growth of electricity production
C．biomass might become the main energy source
D.0.5～0.9of power supply came from biomass
74．Why does the author encourage power plants to use biomass？C．
A．To prevent the waste of energy．
B．To increase production safety．
C．To reduce pollution．
D．To save money．
75．Where does the text probably come from？B．
A．A research plan．B．A science magazine
C．A book review．D．A business report．

17．-You couldn't have chosen any gift for me．
-I'm glad you like it so much．（　　）

A．

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