She _____ science on Monday.But she ____

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问题选择题

She _____ science on Monday.But she _____ on Tuesday. [ ]

A.doesn't have,has it

B.isn't have,has it

C.doesn't have,has one

D.isn't have,has one

答案

答案：A

选择题

____ you read the instructions closely, you would know what I ___ referring to now.[ ]

A. Had, was

B. Should, am

C. Had, am

D. If, was

单项选择题

变压器油闪点指（）。

A.着火点；

B.油加热到某一温度油蒸气与空气混合物用火一点就闪火的温度；

C.油蒸气一点就着的温度；

D.液体变压器油的燃烧点。