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【单选题】

It is difficult to determine which limb of the Moon is fully illuminated().

A、when the Moon is low in the sky at rising or setting

B、at the new Moon phase

C、when taking Moon sights during daylight

D、when the terminator is nearly vertical

更多“It is difficult to determine which limb of the Moon is fully illuminated().”相关的问题
第1题

A、Because it is difficult to plan and manage  B、Because it is cannot be well categorized  C、Because it is a difficult work for people to undergo  D、Because it is seldom researched by research  

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第4题

A、stretches too much  B、is too difficult to make fast  C、parts too readily  Dis too susceptible to mildew  

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第5题

A、A.stretches too much  B、B.is too difficult to make fast  C、C.parts too readily  DD.is too susceptible to mildew  

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第6题

A、it is difficult for them to finish the job in time  B、difficult for them to finish the job in time  C、they have much difficulty to finish the job in time  D、that difficult for them to finish the job in time  

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第7题

A、Yes;belongs  B、No;belonged  C、Yes;belonging  D、No;belonging  

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第9题

A、it difficult for them to finish the job in time  B、difficult for them to finish the job in time  C、they have much difficulty to finish the job in time  D、that difficult for them to finish the job in time  

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第10题

A、impossible  B、possible  C、easy  Ddifficult  

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