--Why did you not come to the party?--I it.but my car broke down on the way．( )A．attendedB．had attendedC．would attendD．would have attended 题目和参考答案——青夏教育精英家教网—

题目内容

14．--Why did you not come to the party？
--I ______ it，but my car broke down on the way．（　　）

	A．	attended		B．	had attended
	C．	would attend		D．	would have attended

分析 --你为什么不来参加聚会？
--我本来是可以参加的，但是我的汽车路上抛锚了．

解答答案：D．
这里but后面是过去的事实，而前面的句子是对过去的虚拟，would have done过去本应该做而没有做，所以选D．B项表示过去已经参加了晚会和句意不符．

点评本题考查虚拟语气，要结合句意搞明白句子是对什么时间的事实进行的虚拟，然后再判断所使用的动词的形式．

练习册系列答案

5．Doctors warn people that anger through unnatural methods is much more harmful to a person's health than the anger itself．（　　）

	A．	controlled		B．	to be controlled
	C．	having controlled		D．	controlling

2．But for my teacher's help when I was in the senior school，I in Fudan University now．（　　）

	A．	would not have studied		B．	hadn't studied
	C．	would not be studying		D．	was not studying

9．Mother reminds，"______rain，take an umbrella．"as spring approaches．（　　）

19．I didn't know your phone number，otherwise I ___ you as soon as I got to Baoji．（　　）

2．The Pacific island nation of Nauru used to be a beautiful place．Now it is an ecological disaster area．Nauru's heartbreaking story could have one good consequence-other countries might learn from its mistakes．
For thousands of years，Polynesian people lived on the remote island of Nauru，far from western civilization．The first European to arrive was John Fearn in 1798．He was the British captain of the Hunter，a whaling ship．He called the island Pleasant Island．
However，because it was very remote，Nauru had little communication with Europeans at first．The whaling ships and other traders began to visit，bringing guns and alcohol．These elements destroyed the social balance of the twelve family groups on the island．A ten-year civil war started，which reduced the population from 1，400to 900．
Nauru's real troubles began in 1899when a British mining company discovered phosphate （磷酸盐）on the island．In fact，it found that the island of Nauru was nearly all phosphate，which is a very important fertilizer for farming．The company began mining the phosphate．
A phosphate mine is not a hole in the ground； it is a strip mine．When a company strip-mines，it removes the top layer of soil．Then it takes away the material it wants．Strip mining totally destroys the land．Gradually，the lovely island of Nauru started to look like the moon．
In 1968，Nauru became one of the richest countries in the world．Every year the government received millions and millions of dollars for its phosphate．
Unfortunately，the leaders invested the money unwisely and lost millions of dollars．In addition，they used millions more dollars for personal expenses．Soon people realized that they had a terrible problem-their phosphate was running out．Ninety percent of their island was destroyed and they had nothing．By 2000，Nauru was financially ruined．Experts say that it would take approximately 433，600，000dollars and more than 20 years to repair the island．This will probably never happen．

56．What might be the author's purpose in writing the text？B
A．To seek help for Nauru's problems
B．To give a warning to other countries
C．To show the importance of money
D．To tell a heartbreaking story of a war．
57．What was Nauru like before the Europeans came？C
A．Rich and powerful
B．Modern and open
C．Peaceful and attractive
D．Greedy and aggressive
58．The ecological disaster in Nauru resulted fromB．
A．soil pollution
B．phosphate overmining
C．farming activity
D．whale hunting
59．Which of the following was a cause of Nauru's financial problem？A
A．Its leaders misused the money
B．It spent too much repairing the island
C．Its phosphate mining cost much money
D．It lost millions of dollars in the civil war．
60．What can we learn about Nauru from the last paragraph？A
A．The ecological damage is difficult to repair．
B．The leaders will take the experts'words seriously．
C．The island was abandoned by the Nauruans
D．The phosphate mines were destroyed．

19．David：Hi，Linda，what are you doing？
Linda：Hi，David．I （61）am preparing（prepare） for the test tomorrow．
David：But 62 are you sitting here in the garden？
Linda：Well，the library is full and the classroom is too noisy． Are you ready（63）fortest？l
David：I am afraid not．I feel very nervous． We don't have much time（64）left（leave）．
Linda：We can prepare together． Maybe that can help．
David：Good idea． How many units will be included in（65）thecoming test？
Linda：Three altogether． They are Unit 4，Unit5 and Unit 6．
David：Really？I（66）thought（think） Unit 6 would not be covered．
Linda：It is included（67）although/thoughit is only partly finished by our teacher． Now let's ask each other questions．You go first．
David：All right．Please name three European countries．
Linda：It's easy． France，Germany and Russia．I（68）caneven say more．
David：It seems you are（69）better（well） prepared than me． Now it's（70）yourturn to ask me questions．
Linda：OK． What are the seven continents of the world？
David：Asia，Europe，Africa，and err…I really can't remember them all．
Linda：Don't worry． You still have some time today to prepare．

So you want to be a citizen scientist? The National Science Foundation (NSF) has got you covered. NSF supports citizen science across all areas of science, whether your passion is to scan the night sky, or explore your own backyard.

Join a flock 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, which 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 observations in the United States. Volunteers set up rain gauges and record data every time a rain, snow or hail storm 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 idle 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, Einstien@Home uses software called the Berkeley Open Infrastructure for Network Computing, better known as BOINC. The software choreographs(安排，筹划) the technical aspect of volunteer computing and helps you use radio telescope signals to search for alien life.

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 citizen scientists to identify images of plankton, snapped by the In Situ Icthyoplankton Imaging System (ISIIS), an underwater robot engineered at the University of Miami. ISIIS has taken millions of images in oceans around the world and upload them into a database; classifying the images helps researchers understand plankton diversity, habitat and behavior.

1.On the website of eBird, a bird-watcher can ________.

A. make contact with other active users

B. explore the world of birds in real time

C. observe all the existing bird species

D. provide and share birds’ information

2.The program “________” is not based on the Internet database.

A. Join the plankton party

B. Be part of a supercomputer

C. Count every drop

D. Search for stars with your computer

3.Which of the following is the best title of the passage?

A. Become a Citizen Scientist

B. Make a Contribution to NSF

C. Be part of Space Exploration

D. Follow the Steps to be a Citizen Scientist

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