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【多选题】
水准测量的误差来源是（）A.
仪器误差
B.
水准尺误差
C.
观测误差
D.
天气误差
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反馈参考答案：
举一反三
【单选题】There was a big fire in the building last night. ____, all the people were able to escape.
A.
Unluckily
B.
Fortunately
C.
To be sure
D.
Above all
【单选题】A big bush fire ___ in Australia last night, but fortunately everyone ____escape. [ ]
A.
took place; could
B.
happened; can
C.
broke out; was able to
D.
happened; could
【单选题】—Her concert was ________ big success last night. —I think it surely makes ________ difference for a new talent.
A.
/; /
B.
a; a
C.
a; the
D.
a; /
【简答题】游戏开发的基本流程:
【简答题】药物疗效不佳，呈自限性（ ）。
【单选题】A big party was held in NO.18 Middle School last night, the teacher with students _____ singing and dancing happily at the party.
A.
is
B.
was
C.
are
D.
were
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