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【多选题】
下列不合法的变量名为A.
st%udent
B.
stu@xjtu
C.
astudent
D.
s_student
E.
wang13
F.
_cppclass
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反馈参考答案：
举一反三
【单选题】There are three classes of DNS servers, there are ( )
A.
root DNS server, top-level domain DNS server and local DNS server
B.
root DNS server, top-level domain DNS server and authoritative DNS server
C.
root DNS server, local DNS server and authoritative DNS server
D.
root DNS server, local DNS server and top-level domain DNS server
【单选题】已知有字段bir代表出生日期，则求年龄的方法为
A.
year(now())-year(bir)
B.
year(now()-bir)
C.
year(now)-year(bir)
D.
year(now-bir)
【单选题】There used__________a post office at the corner of the street.
A.
to be
B.
to being
C.
to have
D.
to having
【单选题】There were a lot of art ________ buried by the pirates.
A.
tombs
B.
temples
C.
banks
D.
treasures
【单选题】There are__________children in the country school.
A.
two thousand five hundred and sixty
B.
two thousands five hundred and sixty
C.
two thousands five hundreds and si xty
D.
two thousand five hundreds and sixty
【简答题】Read and draw. 1. It's eight o'clock. 2. It's two thirty. 3. The cat is under the chair. 4. The bird is beside the cat.
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