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【单选题】
下列函数为偶函数的是（ ）A.
y=x 2 +x
B.
y=x 5
C.
y=x+ 1 x
D.
y= 1 x 2
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举一反三
【单选题】What will happen when the job market worsens?
A.
Many students can't major in all subjects.
B.
. They lost interest in learning.
C.
They will study something to find a stable job.
D.
Students have increasingly shouldered the ever-rising cost of tuition
【判断题】English or history majors are considered less competitive when the job market is shrinking.
A.
正确
B.
错误
【单选题】When the job market worsens, many students they can't major English or history.
A.
defect in
B.
calculate in
C.
undertake on
D.
add to
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