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下列哪些软件是杰魔公司研发的（ ）
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对模型进行切片时，层片厚度越小，打印质量越高。（ ）
影响打印时间的因素包括层片厚度、填充密度等。（ ）
打印同一个模型，填充密度是60%时比30%时用的时间短。（ ）
Directions: In this section, there is a passage with ten blanks. You are requiredto select one word for each blank from a list of choices given in a word bankfollowing the passage. Read the passage through carefully before making yourchoices. Each choice in the bank is identified by a letter. Fill in each blank with aletter. You may not use any of the words in the bank more than once.Themore time teens spend watching television or playing on a computer, theless likely they are to be close to family andfriends, a new study shows. The findings 1_____ over thepsychological health of theteens.The study looked at two groups of teens in New Zealand, 17 years2_____.The first group had 976 teens who were around 15 in 1987. The second was made up of more than 3,000 youngsters who 3_____14 or 15 in 2004, when there were more screen opportunities 4_____than just watching television.Both groups were asked how long they spent reading or doing homework. How close they wereto friends and family was 5_____ using thesame questionnaire.In the first group, the researchers found that for every extra hour spent watching TV, “there was a 13 percent 6_____ in therisk of having low attachment to parents andpeers.”Teens who spent more time reading, 7_____,were found to be closer to their parents.Thefindings were 8_____ for thesecond group. For every extra hour spent on television or computer, theteens were 5 percent more likely to be less attached to their parents andpeers.“Given the9_____ of attachment to friends andparents for adolescent health anddevelopment, concern about high levels of screen time among teens is warranted. Ongoing research is needed to monitor the effect that the technologies have on psychological andphysical 10_____ among the teens,”the researchers write.请选择以下单词对应的字母填在横线上：A) changedB) assessedC) healthD) differentE) meanwhileF) fitnessG) apartH) surprisinglyI) turnedJ) increaseK) raiseL) significanceM) availableN) decreaseO) similar
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