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【简答题】
今有两颗恒星光度相同,其中一颗在空中的亮度为另一颗的9倍,若较亮的那颗恒星离我们的距离为5PC,求另一颗恒星的距离?将其换算成光年,则者与我们的距离应当是多少光年?
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举一反三
【单选题】The lady who had invited us heard me telling my wife that the dinner was terrible, so I was .
A.
wounded
B.
confused
C.
embarrassed
D.
insulted
【简答题】I was going to bed the other night when my wife told me that I had left the light on in the shed（储藏室）. She could see it from the bedroom window. As I looked for myself, I saw that there were thieves i...
【简答题】诗经六义分别是 。
【简答题】《诗经》有六义之说,六义分别是风雅颂和()()()。
【单选题】The lady who had invited us heard me telling my wife that the dinner was terrible so I was _____.
A.
confused
B.
nervous
C.
shameful
D.
embarrassed
【多选题】What are some types of post-listening activities?
A.
multiple-choice questions
B.
answering questions
C.
note-taking and gap-filling
D.
dictogloss
【简答题】诗经六义分别是:
【单选题】a suggestion for a way of keeping some types of soil safe in the near future
A.
Section A
B.
Section B
C.
Section C
D.
Section D
E.
Section E
F.
Section F
G.
Section G
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