如图所示，一理想变压器原、副线圈的匝数比n1:n2=4:1，电阻R=55Ω。原线圈两端接一正弦式交变电流，其电压的有效值为220V。则原线圈中电流的大小为
– Is Miss Wu quiet? -- No, _______. A. she’s B. she isn’t C. she is
Our music teacher is _____ strict teacher. A. a B. an C. the
找答语。 (1)What’s he like?A He’s tall and strong. (2)What’s your mother like?B Yes, she is. (3)Do you have new teachers?C Mr Black. (4)Who’s your English teacher?D Yes, we do. (5)Is your aunt tall? E She’s kind and young.
选出与所给单词同类的一项。 ( )(1)strict A.student B.shy ( )(2)motherA.fatherB.son ( )(2)music A.maths B.many ( )(4)tallA.talkB.old ( )(5)Wed.A.Sun.B.John ( )(6)whatA.watchB.who
朋友问你早上有什么课，他可以说： A. We have Chinese and PE. B. I like Art. C. What lessons do you have in the morning.
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