人教版选修六Unit 3 A healthy life using language课时作业（5）.docx

unit 3 a healthy life using language课时作业阅读理解 ait is a reply to a letter written by zhai mingjun，a 16yearold girl in the class. the two astronauts thank the student for her concerns and wish the class luck in their future studies. “im so happy that the two spacemen replied with a few encouraging words，” said zhai. her letter was one of the 10 winning letters taken into space by fei and nie，who have succeeded in traveling space in the sixth shenzhou spaceship. zhai wrote the letter as if she were a younger sister of the astronauts. “as the single child in my family，i always hoped that i would have an elder brother that i could be proud of，” zhai said. “i thought that the astronauts would be lonely during such a long space trip. i hoped they would feel happy and warm when reading my letter. ” many of zhais classmates also wrote their words of encouragement and admiration to the astronauts. “the letter to the astronauts made us believe that we can also be part of the manned space programme，” said zhao dongxu. all the students have high expectations for chinas future space programme. “i heard that snoopy is the mascot(吉祥物)for us astronauts. i hope i can design a mascot for our heroes，” said liu mengjie，16. “a physics class taught by astronauts in outer space would be very interesting. i want to be the astronaut who teaches students about zero gravity with my head upside down in the spaceship，” said han yinan. many students think that the manned space program is still far away from them. but they feel proud that ordinary students could participate in such_a_great_scientific_achievement and hope there will be more possibilities to take part. 1the best title of this passage can be _athe mascotba reply from spacecthe manned space programdthe letter to the astronauts答案b解析归纳标题题。本文大意为“一封穿越太空的回信让同学们对航天更加神往”。2the passage is mainly about _awhat the students think of the manned space programbhow two astronauts thank and encourage the studentschow the letter from space makes the students care more for astronauticsdhow the students have expectations for chinas future space program答案c解析主旨大意题。同上。3what can you conclude from the passage?aall the students look forward to chinas later space program. bastronauts feel lonely during such a long space trip. cthere is no gravity in the spaceship. da composition contest had been held before the spaceship was launched. 答案d解析推理判断题。从“her letter was one of the 10 winning letters taken into space by fei and nie”可推出。4the underlined part“such a great scientific achievement” in paragrph 4 refers to _achinas future space programbthe achievement that us astronauts achievedcfei and nie succeeded in traveling space in the sixth shenzhou spaceshipdfei and nie made their head upside down in the spaceship答案c解析词义猜测题。从文章第二段可得到答案。bon the morning of november 18，1755, an earthquake shocked boston. john winthrop, a professor at harvard college, felt the quake and awoke. “i rose”， winthrop wrote, “and lighted a candle, looked at my watch, and found it to be 15 minutes after four. ” john winthrop hurried downstairs to the grandfather clock. it had stopped three minutes before, at 4：12. except for stopping the clock, the quake had only thrown a key from the mantel(壁炉台) to the floor. the clock had stopped because winthrop had put some long glass tubes he was using for an experiment into the case for safekeeping. the quake had knocked the tubes over and blocked the pendulum(钟摆). winthrop, therefore, had the key on the floor. the quake had thrown it forward in the direction of the quakes motion by a shock coming from the northwest, perhaps in canada. 5what does “it” in the second paragraph refer to?athe floor. bthe key. cthe clock. dthe case. 答案b解析细节理解题。根据第一段的最后一句可知应选b。6the selection suggests that _aearthquakes are common in bostonbjohn winthrop was a scientistcjohn winthrop often had difficulty in sleepingdharvard college was a center for earthquake researching答案b解析推理判断题。根据第二段的第一句可知应选b。7professor winthrop ran downstairs because he wanted to know what had happened to _athe clock bhis grandfathercthe key dthe glass tubes答案d解析细节理解题。根据第二段的第一句以及第一段john winthrop hurried downstairs to the grandfather clock. 可知应选d。8john winthrop put some tubes into this clock case because _ahe wanted to do an experimentbhe thought an earthquake was probably to happen soonche thought it safe for them to be put theredhe wanted to record the exact time of the earthquake答案c解析细节理解题。for safekeeping“为安全起见而存放”。c why is it that when you go on holiday some members of your family always seem to get bitten more than others? scientists at roth amsted research in herefordshire think they may have found the answer and their work could lead to the development of insect repellents(驱虫剂)james logan has found that some people give off “masking” smell that prevents mosquitoes from finding them. his research builds on earlier studies on cattle, led by roth amsteds professor john pickett, which showed that the number of flies on a herd depended on certain cows being present. the scientists found these unattractive cows gave out different chemical signals from the others. when these cows were moved to another field the number of flies troubling the herd increased. james, working in collaboration with professor jenny mordue at the university of aberdeen, tested the behavioral reaction of yellow mosquitoes to smell from human volunteers. james said, “the mosquitoes were placed into a yshaped tube and given the choice of moving upwind down either branch. the air flowing down one branch was mixed with smell from the hands. ”their results suggest that different attractiveness is due to chemicals in unattractive individuals that switch off attraction by acting as repellents. this theory differs from that of other research groups who have suggested that unattractive individuals lack the attractive chemicals. the researchers are now testing these theories further using sleeping bags to collect whole body smell from volunteers. james said, “by identifying these key chemicals and understanding how they work we could be closer to new methods of protection from these biting insects that cause losses in livestock(家畜) and irritation(发炎) and illness in humans. ”james said, “we hope that the work with cattle and mosquitoes will lead to methods of controlling such biting insects that cause losses in livestock and irritation and illness in humans. ”9that some members of your family always seem to get bitten more than others when you go on holiday is most probably because _athey lack the attractive chemicalsbthey give off “masking” smell that stops mosquitoes finding themcthey dont give off chemical signals that attract fliesdthey give off smelly smell答案b解析细节理解题。根据第二段的第一句可知应选b。10the writer mainly wants to tell the readers _awhy mosquitoes bite some people more than othersbsome ways to avoid being bitten by insectschow insect repellents come into beingdwho is the inventor of the insect repellents答案a解析主旨归纳题。该文开门见山地提出话题。11which of the following is true?awhen attractive cows were moved to another feld the number of flies troubling the herd increased. bjames research shows the number of flies on a herd depen