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相关性主要包括以下哪几个方面（ ）。
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商品产出（俗称“坑产”）是指商品单位曝光产出，即单位曝光量下商品所能成交的金额。商品产出由哪三个指标决定（ ）。
商品人气的影响指标加购率是指：将商品加入购物车的人数与访客数的比例。
B. Fill in the blanks in the following passage with the words in the box. Make changes wherever necessary.irritatingyearningnostalgiaspectrumexceptionsparkbuddydoerrelationshipperspective ignore accompanyAcross the ____1_____ of friends, we have ____2____ who listen to our complaints and share our joy. We have the rare ______3__ of the Relative Friends who make our ____4_______ worry-free. We have work friends and school friends to fill us with ____5______ after a decade. We have faraway friends to help put our life in ________6____, former friends who can be a ___7____ memory; hero friends who can be tireless ____8___ of good as well as new friends with whom we feel an instant ____9____. We even have friends we love to hate, who love us to death though they may constantly bug us with their problems and ______10____ stunts.
Cloze: Fill in each blank with a word from a list of choices given in a word bank .A. peculiarB. subsequentC.termsD.shockedE.experiencesF.personalityG.blessedH.applaudingI. championshipsJ.inseparableK.invisbleL.journeyM.temperN.approachingO.shoutingFriend of an AngelMaybe it was the same calm and quiet(1) that brought us together? Or maybe it was the two oil lamps we used to light in the empty classroom early in the morning that told us to join hands? But whatever it was, we became close friends before we knew it, sharing our happy, sad, wonderful, and overwhelming things in our life (2).One thing (3)to our friendship is that we did not talk much. We would sit at the riverbank near our middle school, watching the ripples and floating slender leaves of the willow trees. We would take a long walk along the big embankment in the farmland close to the town, asking each other questions related to our textbooks. We would jog around the town at five o'clock in the morning to win (4) for our class in the school sports meet. We would easily agree to go to her home or mine for the weekends or holidays. Occasionally, we chatted, mostly about our families or great questions such as why we could not be Nobel or Madame Curie. So it seemed that we did not laugh or play as much as most teenagers do. But deep at heart we both knew that we had found each other.That is how Dongai Xu walked into my life. During the(5) college years, we kept writing to each other about anything on our minds. She also wrote to my family,(6)warmly for my every progress or success, encouraging my younger brothers or sisters to learn from me. She even sent part of her first salary to my parents. We had become such (7)companions that when news of her sudden death reached me in a telegram during the recess of a class, I(8)my classmates with a thundering "NO," ripping the air of the whole campus...For many years afterwards, I could feel an earthquake inside whenever her name came into my mind. Later, I gradually came to(9)with myself by believing that she had been too good to belong to the secular world and that she had been a gift God (10)me with...
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