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【单选题】
当一个实验______时，我们才有可能得到交互作用。（ ）A.
因变量多于1个
B.
自变量多于1个
C.
因变量有多于1个的水平
D.
自变量有多于2个的水平
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反馈参考答案：
举一反三
【单选题】The machine will continue to make much noise ___ we have it repaired.
A.
when
B.
bacause
C.
if
D.
unless
【单选题】The machine will continue to make much noise ______we have it repaired.
A.
when
B.
because
C.
if
D.
unless
【简答题】2 Complete the sentences. ► Make sure ____ you keep your receipt. 1 We were very ____ with the slow service,
and in the end we ____ about it. 2 You often get a two-year ____ with a new
w...
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