首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
专升本
These compounds could not have been formed if the chemical reaction ______ stopped.
These compounds could not have been formed if the chemical reaction ______ stopped.
admin
2013-05-22
34
问题
These compounds could not have been formed if the chemical reaction ______ stopped.
选项
A、have been
B、has been
C、had been
D、were
答案
C
解析
虚拟语气题。主句中是 could have done,相对应的 if 引导的条件状语从句中的时态应为过去完成时 had done,是对过去已发生事情的虚拟。本句大意为:若是当时化学反应被中止,这些化合物就无法形成。
转载请注明原文地址:https://kaotiyun.com/show/Q0eC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Oneanswertothequestionsoflandshortagewassuggestedbyacommitteesomeyearsago.Acitywastobebuiltatsea,housing
TherearemanystereotypesaboutthecharacterofpeopleinvariouspartsoftheUnitedStates.IntheNortheastandMidwest,pe
Greateffortstoincreasewheatproductionmustbemadeifbreadshortages______avoided.
Magnesiumisanothermineralwenowobtainbycollectinghugevolumesofoceanwaterandtreatingitwithchemicals.Althoughor
Somepsychologists(心理学家)maintainthatmentalactssuchasthinkingarenotperformedinthebrainalone,butthatone’smuscles
He______thathecouldcreatelivefishoutofchemicals.
Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforthenormalgrowthandmaintenanceoflifeofanimals,
Thewarhadbegun,andGeorgehadjoinedtheairforce.Hewantedtobeapilotandaftersomemonthshemanagedtogettothea
NursingatBethIsraelHospitalthebestpatientcarepossible.Ifwearetosolvethenursingshortage,hospitaladministration
随机试题
在Excel2010中,“序列”对话框中的填充序列包括()
A.槐花散B.黄土汤C.芍药汤D.十灰散治疗“脏毒”下血,宜选用
A、 B、 C、 D、 E、 A
A.痰中带血、质浊、有腥臭味B.痰多、色黄、质稠C.痰白、质稀D.脓血相兼浊痰、有腥臭味E.痰少、质黏、夹有血丝咳嗽肺阴亏耗证,其痰的特点是
肺炎喘嗽风寒郁肺证,外寒未解,里热已甚。应首选的方剂是
1984年,我国颁布的《土地利用现状调查技术规程》中采用两级分类,其中一级类分为()。
砒霜引起的食物中毒可采用特效解毒剂巯基类药物急救。()
已知“借阅”表中有“借阅编号”、“学号”和“借阅图书编号”等字段,每名学生每借阅一本书生成一条记录,要求按学生学号统计出每名学生的借阅次数,下列SQL语句中,正确的是
适应
A、186282milespersecond.B、8.3millionmilespersecond.C、10000milespermicrosecond.D、1billionmilespersecond.A
最新回复
(
0
)