Listentothedialogueandchoosethebestanswertoeachquestionyouhear(1)[]A.TodayB.TonightC.TomorrowD.Nextweek(2)[]A.Shewasplayingcards.B.ShewaswatchingTVC.She
Listen to the dialogue and choose the best answer to each question you hear (1) [ ]
(2) [ ] A.She was playing cards. B.She was watching TV C.She was watching a film. D.She was reading. (3) [ ] A.She watched the basketball match. B.She did some reading. C.She watched the baseball match. D.She did her homework. |
C;B;B Listen to the dialogue and choose the best answer to each question you hear (1)F:Tony, does your father need to finish his work today? M:No, he doesn't. He can finish it tomorrow. Question:When can Bill's father finish his work? (2)M:What were you doing at this time yesterday, Jill? F:I was watching cartoons at home. Question:What was Jill doing at this time yesterday? (3)F:Did you watch the basketball match on TV last night, Mark? M:No, I didn't. What about you, Janet? F:I didn't watch it, either. I did some reading. Question:What did Janet do last night? |
已知字母组合成英语单词1、e e t t i n h r 2、e e r a t w h 3、o 2020-05-14 …
设关系R与关系S具有相同的目,且相对应的属性的值取自同一个域,则R ? S可记作 A.{t|t?Rú 2020-05-23 …
设关系R与关系S具有相同的目,且相对应的属性的值取自同一个域,则R ∩ S可记作A.{t | t ∈ 2020-05-23 …
设关系R与关系S具有相同的目,且相对应的属性的值取自同一个域,则R∩S可记作A.{t|t∈R∨t∈S 2020-05-23 …
设关系R与关系S具有相同的目,且相对应的属性的值取自同一个域,则R∪S可记作A.{t|t∈R∨t∈S 2020-05-23 …
设关系R与关系S具有相同的目,且相对应的属性的值取自同一个域,则R∪S可记作 ()。A.{t|t∈R 2020-05-23 …
集合R与S的差表示为()。A.{t|t∈R∨t∈S}B.{t|t∈R∧t∈S}C.{t|t∈R∧tS 2020-05-24 …
设关系R与关系S具有相同的目,且相对应的属性的值取自同一个域,则RNS可记作A.{t|t∈R∨t∈S 2020-05-24 …
设关系R与关系S具有相同的目,且相对应的属性的值取自同一个域,则R∪S可记作A.{t | t∈R∨t 2020-05-24 …
在传统的集合运算中,关系R和关系S的差的结果可表示为(t表示元组)______。A.{t|t∈R∨t 2020-05-24 …