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              I was looking through some old photo recently when I came across one of Jack,who was my most favonte cousin. It reminded me of the summer I spend with him when I was eight. He lived on a street where had a lot of old,empty houses. At night,it was scared walking past those houses. One night,I awoke to see Jack sitting by the window with his legs outside,talk. I called his name,but he was asleep. My aunt came in and took her back to bed. She seemed unconcerned about how close her son were to falling from the second floor. ¡°Oh,he's always sleepwa ked. He¡¯ 11 be fine." She was such calm that I've been unafraid that neighborhood ever since.

71. ... some old photo ...         photo ¡ú photos . 

72. ... my most favorite ...       È¥µô most 

73. ... I spend with him ...       spend ¡ú spent 

74. . .. street where had ...      where ¡ú that / which 

75. . .. it was scared ...         scared ¡ú scary 

76. ... legs outside,talk.         talk ¡ú talking 

77. ... took her back ... .        her ¡ú him 

78. ... her son were ...           were ¡ú was 

79. ... was such calm ...          such ¡ú so 

80. ... been unafraid that...      unafraid ºó¼Ó of 

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                                      C 

                      

              Contestants from around the world met in Pomona, California,this month to test their skills at things like driving a car,walking down stairs,and opening doors. Sounds easy,right? But the competitors weren't people ¡ª they were robots!

              The bots were participating in  the final round of the US£¬s DARPA (Defense Advanced Research Projects Agency) Robotics Challenge. This event,which took place on June 5-6,tested robots on how well they could respond during a disaster and the winning team finally took home a $2 million grand prize.

              The DARPA challenge was created after the 2011 Fukushima nuclear disaster in Japan. An earthquake caused a tsunami,which damaged a nuclear power plant. Workers at the plant needed to shut bff an important valve(·§ÃÅ) £¬but it was too dangerous for humans to reach it. The US scientists at DARPA wondered whether the disaster could have been avoided if a robot had been sent to do the job. So they set up the robotics competition.

              Turning a valve was just one task a robot might have to perform when entering a disaster zone. In addition to doing this,robots participating in the challenge had to navigate a course containing several other tasks: driving and exiting a vehicle, opening a door,walking over or clearing objects,cutting a hole in a wall,plus climbing a flight of stairs.

               Teams had to complete the challenge in one hour,and points were awarded based on how quickly the robots completed a task. They didn't have to attempt all the tasks. To make things even more realistic,challenge organizers caused short computer-system blackouts(¶Ïµç) that prevented robots and the human operators controlling them from communicating. That means teams had to program their bots to be partially autonomous (¶ÀÁ¢µÄ) . Robots also couldn¡¯t be attached to anything that could keep them from falling down , which happened a lot.

29.What do we know about this year's DARPA challenge?

   A. It lasted five days.

   B. It was held in Japan.

   C. Its winner got a cash prize.

   D. Its winner will work in Fukushima.

30.What does the underlined part ¡°the job¡± in Paragraph 3 refer to?

   A. To open a door.

   B. To close a valve.

   C. To predict a tsunami.

   D. To rebuild a nuclear power plant.

31.The robots that participated in the US£¬s DARPA challenge were required to .

   A. challenge all the tasks

   B. have a good sense of smell

   C. complete their tasks in an hour

   D. act in the dark in the whole process

32.What is the text mainly about?

   A. A nuclear disaster.

   B. A research program.

   C. A robotics competition.

   D. A scientific organization.

                                    B

Dear Editor,

          Please publish more articles about women scientists. Women scientists have made outstanding contributions to the world. These women make excellent role models. More young women may choose science as a profession if women read featured articles on female scientists like Marie Curie and Rachel -Carson. Both women were encouraged to study science,and they both accomplished great things.

          With her father£¬s encouragement,Marie Curie made the world a better place through her scientific accomplishments. She studied the emission(·ÅÉä) gf rays from uranium(ÓË) £¬a feature she called ¡°radioactivity(·ÅÉäÐÔ) .¡± Later,Curie and her husband,also a scientist,processed the mineral pitchblende before separating two radioactive elements(ÔªËØ). With this discovery,Marie Curie earned her doctorate,and shortly thereafter,both she and her husband were awarded the 1903 Nobel Prize in physics. In 1911 Marie Curie won the Nobel Prize in chemistry for her work with the newly discovered elements; this work laid the foundation for X-rays and atomic physics.

           When Rachel Carson was young,her mother encouraged her to study nature. As an adult,she became known as the mother of the modem environmental movement. After studying marine biology and zoology in college,Carson worked as2.government scientist End wrote several books on how all living things relate to each other. In 1951 her book The Sea Around Us made scientific knowledge about the sea accessible to the general reader and remained on the best-seller list for eighty-six weeks. In 1962 Carson wrote Silent Spring,a book that helped lead to improvements in the use of chemical pesticides (Å©Ò©) .

           Humans have benefited greatly from the work of Marie Curie and Rachel Carson. What if these women had not been encouraged to become scientists? I believe that we need to encourage young women to enter the field of science. With that goal in mind,I sincerely hope your magazine can publish more articles about the contributions that women make to science.

                               Sincerely,

                               Annie Bastien,Grade 7

                               Capistrano Middle School

24.According to the text,Marie Curie.

   A. achieved success with her fathers help

   B. separated two radioactive elements alone

   C. made contributions to the study of X-rays

   D. won the Nobel Prize twice with her husband

25.What can we learn about Rachel Carson?

   A. She was a physicist and chemist.

   B. Her books had a great influence on the public.

   C. She was inspired by her father to become a scientist.

   D. Her role as an environmentalist was rarely known by people.

26.What can we infer about the author?

   A. She aims to become a scientist.

   B. She likes reading and writing stories.

   C. She has a great interest in women scientists.

   D. She wants to publish articles in the magazine.

27.The letter was written to .

   A. introduce some women role models

   B. praise women scientists¡¯ contributions

   C. offer the magazine editor some suggestions

   D. provide information about women scientists

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