Question

 Jack is the ______- child in the family; he wants to have a brother.

A．one

B．single

C．only

D．separate

Answer 1

C

考查词义辨析。句意“杰克是家里唯一的孩子，他想要一个弟弟。”A“一个”；B“单个的”；C“唯一的”；D“分开的”。故选C。