【单选题】【消耗次数:1】
He packed an ____ shirt in case he had to stay another day.
spare
unnecessary
excessive
extra
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相关题目
【多选题】 _____________ , he had to stay at home to look after her.
①  His mother being ill
②  His mother ill
③  Although his mother was ill
④  As his mother was ill
【多选题】 In his spare time, he often _______.
①  A.speak English
②  B.rides a bike
③  C.cycles
④  D.goes cycling
【单选题】 — The old man wouldn’ t stay at home for a rest even if it rained. —_____. He would feel sick if he stayed home for one day.
①  So would my grandpa
②  So wouldn’ t my grandpa
③  Neither would my grandpa
④  Nor wouldn’ t my grandpa
【单选题】 If he had worked harder, he ___.
①  would succeed
②  had succeeded
③  should succeed
④  would have succeeded
【单选题】 He said that he ?[填空] not seen her that day .
①  has
②  have
③  having
④  had
【单选题】 No sooner ___ he arrived home than he ___ to start on another journey.
①  has; was asked
②  have; were asked
③  had; is asked
④  had; was asked
【单选题】 20. Only when he had handed in his exam paper ____ he had made several mistakes.
①  he has realized
②  does he realize
③  has he realized
④  did he realize
【单选题】 It was not until he arrived in class _____ realized he had forgotten his book.
①  when he
②  that he
③  and he
④  he
【单选题】 9. No sooner _______ he arrived home than he _______to start on another journey.
①  has; was asked
②  have; were asked
③  had; is asked
④  had; was asked
【单选题】 No sooner________he arrived home than he________to start on another journey.
①  has;was asked
②  have;were asked
③  had;is asked
④  had;was asked
随机题目
【单选题】 以下关于GPS接收机特点的描述中,错误的是(B )
①  是物联网定位技术与位置服务中的重要设备之一
②  硬件是由天线.RFID标签芯片.主机和电源组成
③  天线接收卫星发送的信号,主机通过卫星信号的传播时间来计算出自己的位置
④  结合电子地图,标注自身的位置 计算导航的路径
【判断题】 光在光导纤维中始终沿直线传播
①  正确
②  错误
【判断题】 移动通信系统结构中核心网与基站通过空中接口通信
①  正确
②  错误
【判断题】 将基础设施作为服务的云计算服务类型是PASS
①  正确
②  错误
【判断题】 制造技术不属于物联网存在的问题
①  正确
②  错误
【单选题】 以下关于移动通信技术发展过程的描述中,错误的是( D )
①  1G采用的是模拟通信方式。
②  2G采用GSM.CDMA等数字技术,使得手机能够接入互联网。
③  3G实现了手机通信网与互联网的业务融合,促进移动互联网应用的发展
④  1G.2G.3G与4G技术的区别主要表现在主干传输网络的带宽上
【单选题】 以下关于位置信息物联网中重要想的描述中,错误的是( B )
①  位置信息是各种物联网应用系统能够实现服务功能的基础
②  位置信息涵盖了空间.时间与时序三要素
③  通过定位技术获取位置信息是物联网应用系统研究的一个重要问题
④  位置服务将成为物联网应用的一个重要的产业增长点
【单选题】 以下关于3G技术特点的描述中,错误的是( B )
①  移动+宽带
②  内速率可以达到5Mbps,漫步行走时可以达到1Mbps,高速移动可以达到144kbps
③  持高速语音与数据信号混传,同时支持高速,实时数据业务及基本的语音业务
④  够在全球范围内实现无线漫游,提供网页浏览,电话会议,视频等多种信息服务
【单选题】 以下关于智能物体与嵌入式技术的关系的描述中,错误的是( )。
①  智能物体应该是一种嵌入式电子设置
②  智能物体的感知,通信与计算能力的大小应该根据物联网应用系统的需求来确定
③  嵌入式电子设置可以是功能简单的RFID芯片,也可能是复杂的无线传感器节点。
④  嵌入式电子设置可以使用各种微处理器芯片和存储器
【单选题】 以下关于云计算与云存储概念的描述中,错误的是( D )
①  计算与存储是计算机科学发展中两个密不可分的关键技术
②  云计算的概念包括计算与存储两个方面的内容
③  云存储提供按需使用的专业化仓储服务,实现可扩展的海量存储
④  用户根据需要选择云存储服务使用的主机.数据库.存储设备