你想知道你的玩具小汽车是不是在椅子下面，你可以这样问（）

A.re you going to have a party on Sunday

B.What can we do on Sunday

C.We can have a party on Sunday

A.re these cherrys

B.Is that a cherry

C.re these cherries

A.My ruler is under your chair

B.My crayon is on your desk

A.whereis

B.whoami

C.pwd

D.whichis

A.It is in the box

B.Is it in the box

C.Where is the box

A.语音识别

B.图像识别

C.语音合成

D.专家系统

A.What are you going to do during the vacation

B.What are you going to do tomorrow

C.Where are you going to do during the vacation