Is this factory ______ you worked at?
A. the one
B. which
C. that
D. where
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Is this the factory _______ you worked?
A. where
B. which
C. that
D. the one
Can you tell me what ______ next Sunday?
A. will they do
B. they would do
C. would they do
D. they will do
She asked me if I knew______________.
A. whose pen was it
B. whose pen it was
C. whose pen it is
D. whose pen is it
40CrNiMo是一种合金结构钢，元素符号前面的数字40表示()。
A. 钢中含碳的千分数
B. 钢中含碳量的万分数
C. 钢中含碳量的百分数
D. 钢中合金元素的总含量
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