8．The Eagles went home.angry and bitter．孩子们回到家.又累又饿．The children went home.tired and hungry．．——青夏教育精英家教网—

3．There was some trouble in space over the weekend．On Thursday May 9，flakes of frozen ammonia（氨） were seen drifting form the International Space Station（ISS）．The team on board immediately prepared for a spacewalk to look into the issue．Two days later，on Saturday，two astronauts stepped outside the ISS to investigate（调查） the leak．The chief suspect was an old ammonia pump．
Thomas Marshburn and Christopher Cassidy conducted the search，but did not discover any visible damage．"All the pipes look shiny clean，"Cassidy reported as he used a mirror to peer into the tight，deep openings．Even so，the astronauts removed the old pump and replaced it with a new one．
Ammonia is used on the ISS to cool the spacecraft's electronic equipment．NASA said this leak did not pose a safety threat to the six space station residents（常驻居民）．But problems with the cooling system could threaten experiments and equipment．
It is still not clear why exactly the leak erupted（喷发）．NASA speculates（推测） that a
microscopic piece of space matter struck the space station，leaving a tiny crack in the ammonia pump．Another possibility is that there was simply a leaky seal in the pipe．Either way，"there's nothing to lose by putting in a fresh pump and pressing ahead with additional detective work，"said Mission Control．
The ISS was launched into orbit in 1998．Since 2000，a crew of astronauts and scientists has continuously occupied it．While in orbit，the international team of astronauts could perform scientific research and data about conditions in the Milky Way and beyond．Many of their experiments focus on human's ability to live and work in space over long periods of time．
NASA astronauts Tom Marshburn and Chris Cassidy completed the May 11spacewalk in 5hours and 30minutes．While these astronauts have performed some amazing tasks，NASA has never before staged a spacewalk so quickly．Marshburn has been on the space station since December，and Cassidy is a new arrival to the ISS．While the leaky pump mystery continues to puzzle the ISS team，they hope further investigations will provide answers．"This type of event is what the years of training were for，"space station commander Chris Hadfield said on Friday．

32．From Paragraph 2we learn thatC．
A．it is impossible to peer into deep openings
B．it is very difficult to replace a pump
C．it was not easy to find the damage
D．some pipes have become too old
33．What is the main use for ammonia on the ISS？D
A．To prevent astronauts on the ISS from feeling too hot．
B．To prevent pumps on the ISS from getting old quickly．
C．To help astronauts stay safe when there is damage to the space station．
D．To prevent the spacecraft's electronic equipment from becoming too hot．
34．It is implied in Paragraph 4that Mission ControlA．
A．thinks changing the pump is necessary
B．wants to keep the cause of the problem secret
C．is sure that the space station has been struck
D．no longer wants to find out the cause of the problem
35．What does the last paragraph suggest about the recent spacewalk？C
A．It took too much time．
B．It was really dangerous．
C．It was quite satisfactory．
D．It wasn't amazing enough．

2．People say that he is rich，and possibly amillionaire （百万富翁）．

1．Some researchers believe thatartificial（人造的） sweeteners may do harm to people's health．

20．By making small changes in the way you live，you cansimplify （简化） your life，reduce your stress and improve your health and happiness．

19．Oldest，Youngest，or in the Middle？
Were you the first or last child in your family？Or were you a middle or the only child？Some people think it matters where you were born in your family．But there are different ideas about what birth order means．
Some people say that oldest children are smart and strong-willed．They are very likely to be successful．The reason for this is simple．Parents have a lot of time for their first child．They give him or her a lot of attention．So this child is very likely to do well．An only child will succeed for the same reasons．
What happens to the other children in a family？Middle children don't get so much attention．So they don't feel that important．If a family has many children，the middle ones sometimes get lost in the crowd．The youngest child，though，often gets special treatment．He or she is the"baby"．Often this child grows up to be funny and charming．
Do you believe these ideas about birth order？A recent study saw things quite differently．This study found that the first children believed in family rules．They didn't take many chances in their lives．They usually followed their own ideas．They took chances．And they often did better in life．
Which theory about birth order do you believe？Look at your own family or you friends'families．Decide which idea fits what you see．
41．This passage is aboutC．
A．why the oldest children in a family usually succeed
B．why some children refuse to follow orders
C．ways in which birth order may affect how children grow up
D．how people have a lot of trouble agreeing about ideas
42．According to the article，some people think that youngest children grow up to beB．
A．babies
B．funny and charming
C．not capable of doing anything
D．strong leaders
43．If later-born children take chances rather than following rules，you might expect them to beA．
A．creative
B．jealous
C．spoiled
D．obedient employees
44．The statement that middle children"sometimes get lost in the crowd"means thatD．
A．they have a poor sense of direction
B．they can't get along with others
C．they have a strong desire to be leaders
D．they don't get a lot of attention
45．The underlined word"theory"meansC．
A．saying
B．comparison
C．idea
D．surprise．

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