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 events

B.could barely estimate the true reaction speed in the trading of atoms between molecules

C.could not detect single monocular events

D.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 emissions

B.by applying a mild electric pulse across two tiny electrodes

C.by creating positively＆negatively charged DPA ions

D.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 statistics

B.corresponds to what he expected Off the basis of statistics

C.is faster than expected

D.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.Bard

C.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 Reactions

B.Trading of Atoms or Electrons

C.A Dilute Solution

D.Molecular Coupling

参考答案：

首页 上页 9 10 11 下页 尾页 10/11/11

★ 自学考试省级导航 ★

全国 A安徽 B北京 C重庆 F福建 G广东 广西 甘肃 贵州 H河南 河北 湖南 湖北 黑龙江 海南 J江苏 江西 吉林 L辽宁 N内蒙古 宁夏 Q青海 S山东 山西 陕西 四川 上海 T天津 X新疆 西藏 Y云南 Z浙江 历年真题分类检索

 ★ 自学考试导航 ★   ★ 自考报名 ★