19．A has been launched by the netzens on the Net to unhealthy information which does h——青夏教育精英家教网——

19．A ______ has been launched （发起） by the netzens on the Net to ______ unhealthy information which does harm to young students．（　　）

	A．	struggle； rid of		B．	campaign； get rid of
	C．	battle； rid of		D．	fight； get rid of

18．It suddenly_____ to Jim that he hadn't eaten anything since the night before．（　　）

17．I know this is not quite the right word，but I can't be_____ to think of a better one．（　　）

16．The new clothes in that shop are so beautiful that Anna cannot _____taking a close look at them，although she can not afford them at present．（　　）

15．Have you ever wondered why birds sing？Maybe you thought that they were just happy．After all，you probably sing or whistle when you are happy．
Some scientists believe that birds do sing some of the time just because they are happy．However，they sing most of the time for a very different reason．Their singing is actually a warning to other birds to stay out of their territory．
Do you know what a"territory"is？A territory is an area that an animal，usually the male，claims（声称）as its own．Only he and his family are welcome there．No other families of the same species（物种）are welcome．Your yard and house are your territory where only your family and friends are welcome．If a stranger should enter your territory and threaten you，you might shout．Probably this would be enough to frighten him away．
If so，you have actually scared the stranger away without having to fight him．A bird does the same thing．But he expects an outsider almost any time，especially at nesting（筑巢）season．So he is screaming all the time，whether he can see an outsider or not．This screaming is what we call a bird's song，and it is usually enough to keep an outsider away．
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs．
You can see that birds have a language all their own．Most of it has to do with attracting mates and setting up territories．
28．Some scientists believe that most of the time birds'singing is actuallyB．
A．an expression of happiness
B．a way of warning
C a way of greeting
D．an expression of anger
29．What is a bird's"territory"？A
A．An area which a bird considers to be its own．
B．A place where families of other species are not accepted．
C．A place where a bird may shout at the top of its voice．
D．An area for which birds fight against each other．
30．Why do birds keep on singing at nesting season？D
A．Because they want to invite more friends．
B．Because they want to find outsiders around．
C．Because their singing helps frighten outsiders away．
D．Because their singing helps get rid of their fears．
31．How does the writer explain birds'singing？B
A．By reporting experiment results．
B．By comparing birds with human beings．
C．By describing birds'daily life．
D．By telling a bird's story．

14．We cannot ______ religion by administrative order or force people not to believe in it．（　　）

13．Does it ever ______ to you that they would be punished for being late？（　　）

12．We are all proud of the great progress that we have ____ in science and technology．（　　）

11．That matter ____ your study surely requires ____ carefully．（　　）

	A．	related to； dealing with		B．	relating to； dealt with
	C．	related to； being dealt with		D．	relating to； having dealt with

10．In its early history，Chicago had floods frequently，especially in the spring，making the streets so muddy that people，horses，and carts got stuck．An old joke that was popular at the time went something like this：A man is stuck up to his waist in a muddy Chicago street．Asked if he needs help，he replies，"No，thanks．I've got a good horse under me．"
The city planner decided to build an underground drainage （排水） system，but there simply wasn't enough difference between the height of the ground level and the water level．The only two options were to lower the Chicago River or raise the city．
An engineer named Ellis Chesbrough convinced the city that it had no choice but to build the pipes above ground and then cover them with dirt．This raised the level of the city's streets by as much as 12feet．
This of course created a new problem：dirt practically buried the first floors of every building in Chicago．Building owners were faced with a choice：either change the first floors of their buildings into basements，and the second stories into main floors，or hoist the entire buildings to meet the new street level．Small wood-frame buildings could be lifted fairly easily．But what about large，heavy structures like Tremont Hotel，which was a six-story brick building？
That's where George Pullman came in．He had developed some house-moving skills successfully．To lift a big structure like the Tremont Hotel，Pullman would place thousands of jackscrews （螺旋千斤顶） beneath the building's foundation．One man was assigned to operate each section of roughly 10jackscrews．At Pullman's signal each man turned his jackscrew the same amount at the same time，thereby raising the building slowly and evenly．Astonishingly，the Tremont Hotel stay open during the entire operation，and many of its guests didn't even notice anything was happening．Some people like to say that every problem has a solution．But in Chicago's early history，every engineering solution seemed to create a new problem．Now that Chicago's waste water was draining efficiently into the Chicago River，the city's next step was to clean the polluted river．
51．The author mentions the joke to showB．
A．horses were fairly useful in Chicago
B．Chicago's streets were extremely muddy
C．Chicago was very dangerous in the spring
D．the Chicago people were particularly humorous
52．The city planners were convinced by Ellis Chesbrough toD．
A．get rid of the street dirt
B．lower the Chicago River
C．fight against heavy floods
D．build the pipes above ground
53．The underlined word"hoist"in Paragraph 4means"B"．
A．change
B．lift
C．repair
D．decorate
54．What can we conclude about the moving operation of the Tremont Hotel？A
A．It went on smoothly as intended．
B．It interrupted the business of the hotel．
C．It involved Pullman turning ten jackscrews．
D．It separated the building from its foundation．
55．The passage is mainly about the early Chicago'sC．
A．popular life styles and their influences
B．environmental disasters and their causes
C．engineering problems and their solutions
D．successful businessmen and their achievements．

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