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【简答题】
Jack told Tom that he would fly to Australia for a holiday. Jack told Tom that he would go to Australia ________for a holiday. 2. Jack also said that he would be back on December 25th. Jack also said that he would not be back________ December 25th. 3.It was Jack's dream to visit Australia. Jack dreamed of________Australia. 4. His dream came true when an Australian friend invited him. His dream came true when he________by an Australian friend. 5.He visited not only Sydney but also Melbourne in Australia. He visited _____Sydney________Melbourne in Australia. 6.He spent 3 days visiting Sydney and Melbourne. It_____ him 3 days _____ Sydney and Melbourne.
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【单选题】关于导体达到静电平衡时,如下说法不正确的是:
A.
导体内部净电荷处处为零,但表面上可以不为零;
B.
导体表面外附近的电场与表面垂直;
C.
导体内电场强度处处为零;
D.
导体的电势为零。
【单选题】From Beijing Opera, I can learn . [     ]
A.
a lot
B.
a lot of
C.
lots of
【单选题】当导体在静电场中处于静电平衡状态时,下列说法错误的是 ( )
A.
导体内任一点场强为零
B.
导体表面附近的场强方向垂直导体表面
C.
导体内是电势处处相等
D.
导体表面各处电势不相等
【简答题】单片机的外部中断0的入口地址为(),外部中断1(INT1)的中断入口地址为(),定时器1的中断入口地为()。
【单选题】Learn lots of
A.
new skills.
B.
for more information.
C.
training will be given.
D.
good with people and a real team player.
【单选题】Which of the following best summarizes the text?
A.
Lots of animals learn, but smarter isn't better.
B.
Humans pay hidden costs for learning.
C.
Learning has dangerous side effects to animals.
D.
Animals learn to adapt to changing environment.
【单选题】Learn lots of_____
A.
new skills
B.
for more information
C.
training will be given
D.
friendly team
E.
good with people and a real team player.
【简答题】外部中断 0 的入口地址为( )。
【单选题】We can learn _     _ from the Internet. [     ]
A.
lot of
B.
a lot of
C.
a lot
D.
lots of
【判断题】光缆中的加强元件只能位于光缆的中心。
A.
正确
B.
错误
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