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【单选题】
设向量组(a,3,1), (2,b,3), (1,2,1), (2,3,1)的秩为2，则a和b的值为（）.A.
a=1,b=4
B.
a=2,b=5
C.
a=-1,b=3
D.
a=-3,b=4
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举一反三
【单选题】—What do you think of the new-comer? —He is easy _______. [ ]
A.
to get along with
B.
to get along
C.
getting along
D.
getting along with
【单选题】—What do you think of the new comer? —She is easy ．
A.
to get along with
B.
to get along
C.
getting along
D.
getting along with
【单选题】What one finds ___________ now may turn out to be nothing but a waste of time in the future.
A.
fascinating
B.
sample
C.
opportunity
D.
reap
【简答题】What one finds ___________ (fascinate)now may turn out to be nothing but a waste of time in the future.
【单选题】How do new comers usually feel when they first arrive in a new country?
A.
They are pleased by all the new things.
B.
They are disappointed at what they see.
C.
They miss their family and friends at home.
D.
They cannot help feeling irritated or frustrated.
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