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The main causes for the development of American higher education．C.The historical development of American colleges and universities．D.The higher education，the better living condition． 参考答案： D (文章的主题是受教育程度越高，生活水平也越高。)----------------------------------------1It can be assumed that before the release of the report by Collinson，people________-．( ) A.could monitor single molecular eventsB.could barely estimate the true reaction speed in the trading of atoms between moleculesC.could not detect single monocular eventsD.never thought of measuring the speed of molecular reaction 参考答案： C (可以认为在Collinson的报告发表前，人们无法观测单个分子的活动情况。)----------------------------------------2The scientists can track each monocular coupling_________． ( ) A.by using all instrument capable of counting single photon emissionsB.by applying a mild electric pulse across two tiny electrodesC.by creating positively＆negatively charged DPA ionsD.by observing them 参考答案： A (由第六段可知，利用一种计算光子发散数量的仪器，科学家可以追踪到每次分子的结合状况。)----------------------------------------3According to Wightman，the rate of photon emissions________． ( ) A.does not match the statisticsB.corresponds to what he expected Off the basis of statisticsC.is faster than expectedD.is slower than expected 参考答案： B (由第七段可知答案为B。)----------------------------------------4This technique could lead to other methods for detecting small numbers of molecules in solution，says_________． ( ) A.Collinson B.BardC.Wightman D.Davers 参考答案： B (由倒数第3段可知答案为B。)----------------------------------------5The title for this passage is likely to be________． ( ) A.Observing Individual Molecular ReactionsB.Trading of Atoms or ElectronsC.A Dilute SolutionD.Molecular Coupling 参考答案：
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