1、do itHow？As you practice，your brain sends“bike riding”messages again and againSoon，the actions are learnt and Yuri are able to ride a bike easily from then on42From the passage we know that neuronsAreceive messages very slowly Bare only found in your skin Csend messages to your brain Dneed electrici
2、ty to work43In Paragraph 3，the writer mentions computers toAcompare them with the human brain Bshow how fast they have become Csay that computers have no abilities Dask people to use computers more44When you have a new thought，Ayour brain will power a light bulb Byour heart beats faster Cyou remembe
3、r something Dthe structure of your brain changes45The article is mainly aboutAall the steps when your brain learns things Bwhat an unbelievable organ the human brain is Chow the brain makes people smarter than computers Dthe things you can do to make your brain work faster四、词汇运用（共1小题，每小题10分）根据短文内容和括
4、号内所给汉语意思，写出空白处各单词的正确形式（每空一词）46（10分）（2016宁波）More and more teenagers are using the Internet nowadays，but some of them arent using it in a proper wayIf you follow these suggestions，itll be much （46） （安全的）than you might thinkDo not give your password to others and never give out your home （47）（地址），real
5、name，age，school or phone number to those （48）（陌生人）Do not share your （49） （私密的）information in Moments （朋友圈）Never answer unwanted （50） （电子邮件）Be （51）（小心的） when you are using public WiFi or scanning QR code （扫二维码）Never go and meet anyone you met online （52） （没有）your parentspermission and never go （53）（单
6、独地）Keep a separate credit （信用）card just for （54） （购物）onlineThis will make it easier to （55） （取消）if something bad happens and your other credit cards can still be used uninfluenced用方框中所给的单词的正确形式填空，使对话通顺、正确每词仅用一次（每空一词）56（5分）（2016宁波） steal matter friend valuable attendSandy：Mom，Im really worriedMom：Why
7、？Whats the （56）？Sandy：I cant find my schoolbagMom：Well，where did you last put it？Sandy：I cant remember!I （57） a concert yesterday so it might still be in the museum hallMom：Do you have anything （58） in your schoolbag？Sandy：No，just my books，my pink hair band and some tennis ballsMom：So it cant be （59
8、）Sandy：Oh，wait!I went to a picnic after the concertI remember I had my schoolbag with me at the picnicMom：So could it still be at the park？Sandy：YesI left early，before the rest of my （60）Ill call them now to check if anybody has it五、语法填空（共1小题，每小题10分）阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式（最多限填3个单词）61（10
9、分）（2016宁波）Long long ago，there was a small village in the Middle EastIn the village there was （61） old man called SthiraHe lived by himselfHis only son had gone far away to 峞峞简单计算菁优网版权所有【专题】溶质质量分数与化学方程式相结合的计算；有关化学方程式的计算【分析】根据金属钾和水反应的化学方程式，得出各物质之间的质量比，列出比例式，即可计算出生成氢气的质量；然后根据溶质质量分数=100%计算【解答】解：设生成KaOH的质量为x，生成氢气的质量为y，2K+2H2O=2KOH+H278 112 27.8g x yx=11.2gy=0.2g所得溶液氢氧化钾分数为：100%=11.2%故答案为：（1）0.2；（2）反应后所得溶液中溶质的质量分数是11.2%【点评】本题属于信息题和运用化学方程式和溶质质量分数公式进行计算的能力的考查，可依据已有的知识和题目中提供的信息完成解答.
