The traffic is heavy these days．I arrive a bit late.so could you save me a place?( )A．canB．mightC．needD．must 题目和参考答案——青夏教育精英家教网—

题目内容

20．The traffic is heavy these days．I arrive a bit late，so could you save me a place？（　　）

A．

can

B．

might

C．

need

D．

must

分析这些天交通堵塞严重，我可能会来晚一些，你可以给我留个地方吗？

解答答案：B．
本题主要考查情态动词．结合句意，本题表达"由于交通堵塞，我可能会来晚一些，你可以给我留个地方吗？"must 语气太强，过于肯定，不符合语境；need 不表可能性；又由于 can 在肯定句中不表示实际上的可能性，不符合题意，所以只有B项符合题意，故正确答案为B．

点评本题属于情态动词的考查，需要考生对各种情态动词的基本意义和特殊意义牢记，根据语境进行准确选择．

练习册系列答案

11．---Do you think I could borrow your bicycle？
---_________．（　　）

	A．	How come？		B．	So what？
	C．	Yes，go on．		D．	Yes，help yourself．

8．So you want to be a civilian scientist？The National Science Foundation（NSF）has got you covered．NSF supports civilian science across all area of science，whether your passion is to scan the night sky，or explore your own backyard．
    Join a group of birders．
    eBird is an online platform that allows bird-watchers to go online and record their sightings to a database．With more than 100，000 active users，eBird's system is a treasure of information on bird population，distribution and habitat，with users can explore in real time．
    Count every drop．
    The Community Collaborative Rain，Hail and Snow Network（CoCoRaHS） is the largest provider of daily precipitation（降水）observations in the United States．Volunteers set up rain gauges（测量仪器）and record data every time rain or snow passes over．Data is organized and shared on the CoCoRaHS website，and used by scientists，farmers and more．
    Search for stars with your computer．
    Einstein@Home uses your computer's spare time to search for space signals．The project has already had major successes； Volunteers discovered about 50 stars，using data from Puerto Rico's Arecibo Observatory and Australia's Parkes Observatory．Einstein@Home also searches for gravitational-wave signals using data from NSF's Laser Interferometer Gravitational Wave Observatory．
    Be part of a supercomputer．
    To link all those home computers，Einstein@Home uses the software called the Berkeley Open Infrastructure for Network Computing，better known as BOINC．The software choreographs（编排）the technical aspect of volunteer computing and help you use radio telescope signals to search for creatures outside the earth．
    Join the Plankton Party．
    Without plankton，life in the ocean would not exist．These tiny organisms form the base of the food chain，and play an important role in the global carbon cycle．Plankton Portal enlists（征募） civilian scientists to identify images of plankton，snapped by In Situ Icthyoplankton Imagine System（ISIIS），an underwater robot engineered at the University of Miami．ISIIS has taken millions of images in oceans around the world；classifying the images helps researchers understand plankton diversity，habitat and behavior．

36．According to"Join a group of birders"，eBird's system helps people find the information aboutB．
A．the record paper of its database
B．the spreading areas of a bird species
C．more than 100，000 active users
D．the living habits of a bird species
37．You can join"Count every drop"if you are interested inB．
A．space
B．weather
C．animals
D．organisms
38．Which of the following two programs is related to the space exploration？C
A．"Join a group of birders"and"Count every drop"．
B．"Count every drop"and"Search for stars with your computer"．
C．"Search for stars with your computer"and"Be part of a supercomputer"．
D．"Be part of a supercomputer"and"Join the plankton party"．
39．Plankton is vital toA．
A．sharks
B．elephants
C．snakes
D．eagles
40．Which of the following is the best title of the passage？B
A．Make the Most of Computers!
B．Become a Citizen Scientist!
C．Be Part of Space Exploration!
D．Make a Contribution to NSF!

15．Most Schools have banned junk food and brought out new menus．"That's cool!"said Andreas Petrou， 11^th grader．（　　）

5．You never see them，but they're with you every time you fly．They record where you're going，how fast you're traveling and whether everything on your airplane is functioning normally．Their ability to withstand （经受）almost any disaster makes them seem like something out of a comic book．They're known as the black box．
    When planes fall from the sky，as a Yemeni airliner did on its way to the Comoros Islands in the Indian Ocean June 30，2009，the black box is the best bet for identifying what went wrong．So when a French submarine（潜水艇）detected the device's homing signal five days later，the discovery marked a huge step toward detennining the cause of a tragedy in which 152 passengers were killed．
    In 1958，Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction．That was the first model for a black box，which became a requirement on all US commercial flights by 1960．Early models often failed to withstand crashes，however，so in 1965 the device was completely redesigned and moved to the rear of the plane一the area least subject to impact--from its original position in the landing wells（起落架舱）．That same year，the Federal Aviation Authority required that the boxes，which were never actually black，be painted orange or yellow to aid visibility．
    Modem airplanes have two black boxes：a voice recorder，which tracks pilots'conversations，and a flight-data recorder，which monitors fuel levels，engine noises and other operating functions that help investigators reconstruct the aircraft's final moments．Placed in an insulated （隔绝的）case and surrounded by quarter-inch-thick panels of stainless steel，the boxes can withstand massive force and temperatures up to 2000°F．When submerged，they're also able to emit signals from depths of 20，000 ft．Experts believe the boxes from Air France Flight 447，which crashed near Brazil on June 1，2009，are in water nearly that deep，but statistics say they're still likely to turn up．In the approximately 20 deep-sea crashes over the past 30 years，only one plane's black boxes were never recovered．

46．What does the author say about the black box？D
A．It ensures the normal functioning of an airplane．
B．The idea for its design comes from a comic book．
C．Its ability to ward off disasters is incredible．
D．It is an indispensable device on an airplane
47．What information could be found from the black box on the Yemeni airliner？A
A．Data for analyzing the cause of the crash．
B．The total number of passengers on the board．
C．The scene of the crash and extent of the damage．
D．Homing signals sent by pilot before the crash．
48．Why was the black box redesigned in 1965？C
A．New materials became available by that time．
B．Too much space was needed for its installation．
C．The early models often got damaged in the crash．
D．The early models didn't provide the needed data．
49．Why did the Federal Aviation Authority require the black boxes be painted orange or yellow？C
A．To distinguish them from the color of the plane．
B．To caution people to handle them with care．
C．To make them easily identifiable．
D．To conform to international standards．
50．What do we know about the black boxes from Air France Flight 447？A
A．There is still a good chance of their being recovered．
B．There is an urgent need for them to be restructured．
C．They have stopped sending homing signals．
D．They were destroyed somewhere in Brazil．

12．一So you saw the accident with your own eyes？
一Yes．I for the bus across the street．（　　）

	A．	had been waiting		B．	have been waiting
	C．	was waiting		D．	would wait

9．Although war still exists on our planet，I do believe it's possible for different ethnic groups to live together in______．（　　）

4．Not everyonesubscribes to the idea that money can bring everything．

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