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
2024-01-13
33
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/3357876.html
相关试题推荐
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetourf
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetourf
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetourf
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetourf
Thedevelopmentofnewenergysources______toberewarding.A、turnedoutB、turned
Wedonotoftenconsiderhowmuchenergygoesintocreatingcomfortslikehot
Inadequacyofenergyresourcesormoreoftenofthetechnologiesandorganiza
______evidencethatlanguage-acquiringabilitymustbestimulated.A、ItbeingB、I
Thedevelopmentofnewenergysources______toberewarding.A、turnedoutB、turned
NeitherhisfellowworkersnorTodhimself______tothesolutionputforwardbyt
随机试题
中国移动通信集团公司(ChinaMobileCommunicationsCorporation),简称“中国移动”,于2000年成立。是一家国有移
[originaltext]W:Wouldyouliketoseeamenu?M:No,thankyou.Ialreadyknow
患者男,25岁。右胫腓骨骨折,行石膏固定,10小时后右足趾明显肿胀,青紫,活动差
某医院外科病房楼,地下一层,地上二十层。全楼设有消火栓系统、自动喷水系统等消防设
洋务运动初期,清政府设北洋大臣专管北方三口通商事务。三口是指()。A.天津、牛
商业银行存款业务按照币种可以划分为()。A.人民币存款和外币存款 B.单位存
以下情形中不予医师执业注册的是A.受过刑事处罚的 B.不具有完全民事行为能力的
2020年11月15日,某房地产开发公司(增值税一般纳税人)收到主管税务机关的《
在单层工业厂房结构吊装中,如安装支座表面高度为15.0m(从停机面算起),绑扎
某施工总承包单位依法将自己没有足够把握实施的防水工程依法分包给有经验的分包单位,
最新回复
(
0
)