signal的近义词?She wondered how she could send a signal.She wanted to send _.a.a letterb.a signc.a signatured.a message

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signal的近义词?Shewonderedhowshecouldsendasignal.Shewantedtosend_.a.aletterb.asignc.asignatured.amessage

signal的近义词?She wondered how she could send a signal.She wanted to send _.a.a letterb.a signc.a signatured.a message
signal的近义词?
She wondered how she could send a signal.She wanted to send _.
a.a letter
b.a sign
c.a signature
d.a message

signal的近义词?She wondered how she could send a signal.She wanted to send _.a.a letterb.a signc.a signatured.a message
选D
句子说她想要把消息送出去
letter是比较正式的信件,sign是记号,signature是签名,message是消息,

d

d

D
她想知道怎样发出信号,她想发信息.