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【单选题】
技术经济指标变动对产品成本的影响主要表现为对( )的影响。A.
产品总成本
B.
产品产量
C.
产品单位成本
D.
产品总成本和产品产量
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举一反三
【单选题】— I called you yesterday evening. But nobody was in. — Sorry, I _____ with parents in the park. [ ]
A.
take
B.
took a walk
C.
was taking a walk
D.
are taking a walk
【单选题】– I called you yesterday evening, but there was no answer. --Oh, I am sorry. I __________ dinner in my friend’s home.
A.
have
B.
had
C.
was having
D.
have had
【单选题】When you phoned me yesterday evening, I _______ the housework and was starting to take a bath.
A.
had just finished
B.
was finishing
C.
have already finished
D.
was going to finish
【简答题】嗯,还是那样呗。
【单选题】--I called you yesterday evening, but there was no answer. --Oh, I’m sorry I __________in the shopping mall.
A.
shop
B.
shopped
C.
was shopping
D.
have shopped
【单选题】---I called you yesterday evening, but there was no answer. ----- Oh, I’m sorry. I _____ dinner at a restaurant at that time.
A.
have
B.
had
C.
was having
D.
have had
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