问题 选择题

某研究小组将生长旺盛的甲藻等量分成5组培养,各组甲藻培养液的pH分别设定为6.0、7.0、8.0、9.0、10.0,在黑暗中放置12h,然后在适宜光照等条件下培养,随即多次测定各组的氧气释放量并计算净光合速率。将实验结果绘制成下图。下列有关实验结果的分析正确的是

[ ]

A.本实验除了通过测定CO2释放量,还可以通过测定O2吸收量来计算净光合速率

B.黑暗放置过程中,甲藻培养液pH会有所变化,主要是无氧呼吸产生乳酸

C.若甲藻长时间处于pH为10.0的条件下,甲藻不能正常生长繁殖

D.甲藻在海水pH为6.0~9.0时容易发生赤潮,原因是光合作用速率高

答案

答案:C

完形填空
Mark Twain said that "habit is habit, and not to be flung(扔) out the window by anyone, but coaxed(劝诱) downstairs a step at a time. " The chances of successfully changing negative behavior    when you make gradual changes that give you time to _   _ negative patterns for positive ones.
On any given day, countless numbers of us get out of bed and _   _ to begin to change a given behavior "today." Whether it be exercising more, drinking less, managing time      or some other change in a negative behavior, we start out with high       . In a short time, however, a vast majority of people fail and are soon doing    it was they thought they shouldn't be doing.
After considerable research, some researchers believe that behavior changes usually do not       if they start with the change itself.      , they believe that we must        a series of “stages” to adequately prepare ourselves for that       change. Once you have analyzed all the factors that       what you do ,you must decide which behavior-change technique will work best for you.
According to the psychologist Albert Ellis, most     problems and related behaviors arise from irrational (不理性的) statements that people make to      when events in their lives are different from what they would like them to be. For example, suppose after doing       on an exam, you say to yourself, “I can not believe I failed that easy exam. I am so stupid.”By changing this irrational “catastrophic” self-talk into rational,   statements about what is really going on, you can increase the       that positive behaviors will occur.
Positive self-talk might be     as follows: "I really didn't study enough for the exam. I just need to prepare for the next     ”.
Such self-talk will help you to recover quickly from      and take positive steps to correct the situation. Some other technique like purposefully      or stopping negative thoughts and refusing to dwell on (沉湎于) negative images can also spare you wasted energy, time and emotional resources and move on to positive changes.
小题1:
A.decline B.remainC.disappearD.improve
小题2:
A.substituteB.cancelC.find D.ignore
小题3:
A.refuseB.determineC.hesitate D.advocate
小题4:
A.moreB.betterC.worseD.less
小题5:
A.valuesB.requirementsC.expectationsD.levels
小题6:
A.whicheverB.howeverC.wherever D.whatever
小题7:
A.succeed B.failC.existD.fade
小题8:
A.NeverthelessB.OtherwiseC.InsteadD.Moreover
小题9:
A.look throughB.break throughC.go throughD.pull through
小题10:
A.initialB.temporaryC.instantD.eventual
小题11:
A.involveB.influenceC.explainD.adjust
小题12:
A.emotionalB.physicalC.technicalD.professional
小题13:
A.allB.othersC.someoneD.themselves
小题14:
A.poorly B.carefullyC.completelyD.slowly
小题15:
A.positiveB.ridiculousC.negative D.explicit
小题16:
A.danger B.awarenessC.amountD.probability
小题17:
A.writtenB.phrasedC.listedD.captioned
小题18:
A.researchB.testC.talk D.problem
小题19:
A.tirednessB.habitsC.disappointmentD.burdens
小题20:
A.recallingB.startingC.blocking D.holding
单项选择题