scores of times.but Derek still couldn't understand how to use past participle in a concrete situation．( )A．Having explainedB．Having been explainedC．Though it was explainedD．It was explained 题目和参考答案——青夏教育精英家教网——

题目内容

17．_____ scores of times，but Derek still couldn't understand how to use past participle in a concrete situation．（　　）

	A．	Having explained		B．	Having been explained
	C．	Though it was explained		D．	It was explained

分析虽然解释了几十遍，但Derek还是不能理解过去分词如何在具体情景中使用．

解答答案：D
题干中but是表示转折关系的并列连词，说明前面也是一个简单句；though不能和but连用．故选D．

点评并列连词用来连接并列句．常用的并列连词有：表并列关系的and，neither…nor．，either…or…，as well as，not only…but also…；表转折关系的but，yet，however，still，while；表选择关系的either…or…，neither…nor…，or，otherwise；表因果关系的for，therefore，so，学习时要加以区分和掌握．

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14．For readers interested in contributing to help victims of the earthquake and tsunami that struck Japan and the Pacific region on March 11，2011，here is a list of contact information and links for some agencies that plan to provide relief．
         Locating Loved Ones
If you are looking for information on people in the quake zone，Google has opened a Person Finder page．
Ushahidi，a crowdsourcing mapping tool，has set up a local platform for Japan that allows people in the area affected by the earthquake to text the location of people who may be trapped in damaged buildings．
Inquiries concerning U．S．citizens living or traveling in Japan should be referred to the U．S． Department of State，Office of Overseas Citizens Services at 1-888-407-4747 or 202 647-5225．
         Aid and Charitable Organizations
         Each of the following groups has set up fundraising sites specifically for the victims of Friday's earthquake and tsunami．
         AMERICAN RED CROSS
           Red Cross officials say donors can text REDCROSS to 90999 and a 10 donation will automatically be charged to donor's phone bill，or donations can be made directly on its Web site．         GLOBALGIVING．ORG
         GlobalGiving is working with International Medical Corps，Save the Children，and other organizations on the ground to disburse funds to organizations providing relief and emergency services to victims of the earthquake and tsunami．Donors can text JAPAN to 50555 to give 10，and larger increases can be submitted on GlobalGiving's Web site．
         THE SALVATION ARMY
The Salvation Army has been providing food and shelter to Tokyo commuters who were stranded when public transportation was interrupted by the earthquake．They are to send a team to Sendai，a city about 250 miles Tokyo，to assess the situation there．Text JAPAN or QUAKE to 80888 to makea 10donation（Make sure to respond"YES"to the Thank You message you receive．） Donations can also be made on the organization's Web site or by calling 1-800-SAL-ARMY
        SHELTERBOX．ORG
         Shelterbox．org is a disaster-relief organization that focuses on providing survival materials such as tents and cooking equipment to families displaced by disasters．
         UJA-FEDERATION OF NEW YORK
         Information is available on the organization's Web site or by calling （212）836-1486．
41．What's the best title for the passage above？C
A．Japan Earthquake and Tsunami
B．International Organizations
C．How to Help
D．How to Donate Money
42．What does the word"text"mean in this passage？D
A．a passage in a book
B．write something
C．read messages
D．send messages to
43．If you are an American and worried about your friend travelling in Japan，B
A．you'd better give him a message
B．you should call 1-888-407-4747 or 202 647-5225
C．you should get in touch with Ushahidi
D．you can look for information on all of the Web sites
44．If you want to make a donation of $ 10000 or more，you should get in touch withC．
A．THE SALVATION ARMY
B．AMERICAN RED CROSS
C．GLOBALGIVING．ORG
D．SHELTERBOX．ORG．