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【单选题】
在构建局域网时，当连接不同的网段时，可以用(38)或39来隔离两个网段，其中(39)只用于连接两个网段。将两个网段隔离的好处是(40)。这两种设备与路由器相比，主要的不同是它们工作在(41)，而路由器是工作在(42)。A.
网卡
B.
重发器
C.
网桥
D.
交换机
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【简答题】阅读理解。 'It's over! Thank goodness!' School was over and I was tired. I sat at the front of the school bus. Janie, the driver, always tries to break the uncomfortable atmosphere (气氛) by talking. I try t...
【单选题】On February 3,1956,Autherine Lucy became the first African-American student to attend the University ofAlabama,although the dean of women refused to allow Autherine to live in a university dormitory. ...
A.
She moved into a dormitory.
B.
She sat in the front row of her class.
C.
She became terrified of the white rioters.
D.
She was befriended by an assistant to the university president.
【单选题】On the first day of teaching, Frank McCourt sat behind a desk because _________
A.
As a new teacher, he was shy and scared by the students
B.
He was lazy and reluctant to stand up to teach the students
C.
He thought teachers were authoritative so that he could sit during teaching
D.
He just arrived at the classroom earlier and was waiting for the students
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