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【單選題】
探測器繞月球做勻速圓周運動，變軌后在周期較小的軌道上仍做勻速圓周運動，則變軌后與變軌前相比：（ ）
A.
軌道半徑變小
B.
向心加速度變小
C.
線速度變小
D.
角速度變小
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舉報參考答案：
舉一反三
【單選題】What upset us was that our flight was delayed because of the ________ storm.
A.
fierce
B.
legal
C.
intelt
D.
secure
【單選題】More ________ information is needed to help us work out the real situation.
A.
generous
B.
reliable
C.
grateful
D.
fluent
【單選題】The wide popularity of the Korean music Gangnam Style has _________ heated discussions about people’s tastes nowadays.
A.
set about
B.
set aside
C.
set off
D.
set down
【單選題】In the writer’s opinion,_________
A.
free education for all probably leads to a perfect world
B.
all the social problems can’t be solved by education
C.
education can solve most of the world’s problems
D.
free education won’t help to solve problems
【單選題】The writer wants to prove that _______
A.
a farmer is more important than a professor
B.
our society needs free education for all
C.
our society needs all kinds of jobs
D.
work with hands is the most important
相關題目：
【單選題】What upset us was that our flight was delayed because of the ________ storm.
A.
fierce
B.
legal
C.
intelt
D.
secure
【單選題】More ________ information is needed to help us work out the real situation.
A.
generous
B.
reliable
C.
grateful
D.
fluent
【單選題】The wide popularity of the Korean music Gangnam Style has _________ heated discussions about people’s tastes nowadays.
A.
set about
B.
set aside
C.
set off
D.
set down
【單選題】In the writer’s opinion,_________
A.
free education for all probably leads to a perfect world
B.
all the social problems can’t be solved by education
C.
education can solve most of the world’s problems
D.
free education won’t help to solve problems
【單選題】The writer wants to prove that _______
A.
a farmer is more important than a professor
B.
our society needs free education for all
C.
our society needs all kinds of jobs
D.
work with hands is the most important
參考解析：
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