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【单选题】
为什么许多鸟全都停在电线上,却很安全?()A.
因为鸟的体积很小
B.
因为这些鸟只站在一根电线上
C.
因为这些鸟是绝缘体
D.
因为鸟的爪子与人不同
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【简答题】Fill in the blanks with the words given. Change the form where necessary. The writer thinks of his father when he _____(complain) about trifles. I'm afaraid I have a _____(complain) to make. The write...
【单选题】普通引导模式下，司机确认引导信号开放后，按压（ ）键解除停车控制模式，监控装置监控列车以不超过20km/h的速度越过该信号机。
A.
解锁
B.
确认
C.
警惕
D.
定标
【单选题】（8）、IP地址块192.168.15.136/29的子网掩码可写为
A.
255.255.255.192
B.
255.255.255.224
C.
255.255.255.240
D.
255.255.255.248
【单选题】IP 地址192.168.15.136/29 的子网掩码可写为（）
A.
255.255.255.192
B.
255.255.255.224
C.
255.255.255.240
D.
255.255.255.248
【简答题】6) If they were here tomorrow, the problem (solve) _______________.
【简答题】完形填空. Swimming is very popular. People like 1 in summer because water makes people feel 2 . If you like swimming but swim in a wrong place, it may be 3 . These years, a lot of people 4 when they were...
【单选题】IP地址块192.168.15.136/29的子网掩码可写为
A.
255.255.255.192
B.
255.255.255.224
C.
255.255.255.240
D.
255.255.255.248
【单选题】IP 地址块192.168.15.136/29的子网掩码可写为
A.
255.255.255.248
B.
255.255.255.240
C.
255.255.255.192
D.
255.255.255.224
【简答题】If I were you, I ( accept ) ______________ the job. 2 . If they were here tomorrow, the problem (solve) _____________. 3 . Luckily I was wearing a seat belt. If I hadn’t been wearing one, I (injure) ...
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