Tom is funny. He often jokes. A．says B．t_爱下问搜题

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问题选择题

Tom is funny. He often jokes.

A．says

B．tells

C．speaks

D．talks

答案

答案：B

讲笑话只能用 tell jokes 故选B

选择题

I __work out the maths problem.Lily____know the answer.Let's ask her for help.[ ]

A.can't must

B.can't may

C.may not , has to

D.have to ,can

单项选择题

关于胚层的形成，正确的是（）

A.近滋养层细胞者形成内胚层

B.近中央者形成外胚层

C.外胚层的腔形成卵黄囊

D.囊胚植入后，中心囊腔内的细胞团发育为两层

E.内胚层的囊形成羊膜腔