首页
登录
职称英语
There is substantial evidence that certain forms of solar energy either now or w
There is substantial evidence that certain forms of solar energy either now or w
游客
2025-02-25
41
管理
问题
There is substantial evidence that certain forms of solar energy
either now or within a few years will be economically competitive with conventional sources of heat and power
.
选项
A、either now or within a few years will be economically competitive with conventional sources of heat and power
B、will either be economically competitive with conventional sources of heat and power within a few years or are so now
C、will be economically competitive with conventional sources of heat and power either now or within a few years
D、either are now economically competitive with conventional sources of heat and power or will be so within a few years
E、are either now or will be within a few years economically competitive with conventional sources of heat and power
答案
D
解析
A、C中无论either…or连接的时间状语放在谓语之前(如A)或放在谓语之后(如C),都易产生误解,使读者认为“现在或者在将来的几年内”这两个不同时段的时间状语共同修饰同一个表将来的谓语动词will be,这显然在修饰上是不可行的。另外,由于either…or结构要求并列成分的形式及功能的一致性(可查阅下一章“平行结构”),把B代回原句,句子可简化为:will be or will are so now,显然后半部分的will are是不能接受的。E中的either之后是一时间状语now,or之后是整个谓语部分,两者的并列同样不能让人接受。而D中,either…or连接两个与不同时间段相对应的不同谓语部分的并列,这种表达不仅在语法上,而且在逻辑上都是正确的:即now和are对应,will be与within a few years,不会存在共用同一谓语的情况。其中so替代与前面相同的表语成分:economically competitive with conventional sources of heat and power。注意:本句的evidence是用同位语从句修饰的。
转载请注明原文地址:https://tihaiku.com/zcyy/3972438.html
相关试题推荐
TheenergysourceonVoyager2isnotanuclearreactor,inwhichatomsareacti
Promotedbynewevidencethatthehealthriskposedbyradongasisfarmoreser
AmericanproductivityisdeclininginrelationtoEurope’s;theenergyexpended
Citingevidencethatthecarbondioxidecontentoftheatmospherehasincreased
TheofficiallanguagesareofIndia,Hindi,andofPakistan,Urdu,butneithera
Whichofthefollowingmostlogicallycompletesthereasoning?Eitherfoodscarc
Analystsbelievethatwhereasbaddecisionsbyelectedleaderscancertainlyhur
Certainpesticidescanbecomeineffectiveifusedrepeatedlyinthesameplace;
StudyingskeletonsunearthednearRome.DNAevidencewasrecoveredbvscientists
Thelobbyistsarguedthatbecausethereisnostatisticalevidencethatbreathin
随机试题
FortheAMAT.in1998,theSalesareexpectedtoreach______.[br]Accordingt
Thepastagesofmanhaveallbeencarefullylabeledbyanthropologists.Des
打样工艺要求做到与实际印刷( )。A.纸张、油墨、版材相同 B.纸张、油墨、
下列不属于课堂纪律类型的选项是() A.教师促成的纪律 B.集体促成的
教育性督导的具体内容包括()。A.教导有关“服务对象群”的特殊知识 B.教导
人类学习一般具有()的特点。 A.社会特性B.以语言为中介 C.能动性
关于环境保护税的计税依据,下列说法错误的是()。A.应税大气污染按照污染物
(2015年真题)下列各项中,属于盈余公积金用途的有()。A.弥补亏损 B.转
关于并联电容器装置的连线方式,下列哪些说法是正确的?( )A.高压电容器组可接
根据水利部《水利安全生产信息报告和处置规则》(水安监[2016]220号),部直
最新回复
(
0
)