题目

科研小组对猕猴桃果肉的光合色素、光合放氧特性进行了系列研究。图1为光合放氧测定装置示意图，图2为一定光照条件下果肉随时间变化的光合放氧曲线。请回答下列问题：（1）进行果肉色素提取时需加入适量CaCO3，目的是_____________________，色素提取液需用________过滤来获取。（2）该实验中的色素提取液若以波长为横坐标，吸光率为纵坐标，可以绘制出色素的________。（3）氧电极可以检测反应液中氧气的浓度，测定前应排除反应液中________________的干阅读理解。When you’ve seen a couple fighting or having a pity argument,what is the first thing that comes into your mind?Probably you think that you will never allow arguments to set in your relationship,especially when you get married,or will never think to start one,but arguments seem to come naturally.You argue about the brand of coffee,or what to eat at lunch,who will do the dishes,etc.Sometimes,more than that,but regardless of your reasons for the argument(or fight),fixing a troubled relationship and having a solution is very important.Our partners are our most valuable fortunes.Companions provide a listening ear for our troubles,support for our dreams,and a safety net when we fall.They give us love,even when we are unlovable.They are and must be our friends.Inevitably,though,sometimes we go through troubled periods and a solution should be sought through the following steps:Address the situation.Admit to your partner that something is wrong and needs to be fixed.Determine the problem.Together,discuss what problems we are facing.Be honest and let your honesty be in its proper place.Remember,you are talking to your partner,another half of yourself.Apologize.We accept responsibility for our actions and seek forgiveness.Refuse to blame.In addition,we must avoid defending ourselves.There could be a temptation to argue over who did what;however,the goal is not proving who is right but saving the relationship.Begin repairs.Ask,“What can I do to rebuild our relationship?” The key here is to do willingly whatever is requested.Commit to rebuilding.Immediately start investing your time,energy,and love in restoring the relationship.In order to have a good relationship with a partner who accepts and loves us,we must be willing to pay the high price of patching up the broken relationship.Walking away might seem easier,but in the long run,we would lose a valuable treasure.1.It is essential to fix a troubled relationship in that .A.arguments seem to come naturallyB.arguments are not allowed in a good relationshipC.companions provide us with comfort and supportD.sometimes we inevitably go through troubled periods2.The solutions to fixing a troubled relationship do NOT include .A.asking for forgiveness of the mistakesB.bravely facing the existing problemsC.being honest when discussing the problemsD.trying to speak for ourselves to protect our rights3.The author does NOT agree that .A.our partners are our most valuable treasuresB.it’s sensible to ignore the heated argument for a whileC.proving who is to blame has nothing to do with the solutionD.it takes time,energy,and love to rebuild the broken relationship4.The purpose of the text is to .A.tell how to sensibly deal with troubled relationshipsB.confirm that arguments are common in daily lifeC.encourage people to invest love in a relationshipD.persuade people not to blame those who make mistakes