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【单选题】
要使 4 个连续的 C 类网络汇聚成一个超网,则子网掩码应该为A.
255.240.0.0
B.
255.255.0.0
C.
255.255.252.0
D.
255.255.255.252
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【简答题】看图片回答问题。 1. What will you do tomorrow? I __________________________________________. 2. What's your mum going to do tomorrow? She __________________________________________. 3. How shall I go there? Y...
【简答题】看图片，回答问题。 1. What are you doing? I _____________________________________ 2. What's the boy doing? He _____________________________________ 3. What are they doing? They ________________________________...
【单选题】I know that half of ____ I spend _____ is wasted.
A.
that; to advertising
B.
what; to advertise
C.
what; on advertising
D.
what ; on advertise
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