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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Until about 30 years ago, language researchers focused their studies on infants who had already begun to babble, according to Jusczyk, who has written a book on how children acquire language titled Th...
A.
By listening to the sounds.
B.
By repeating the sounds.
C.
By listening to their own babbling.
D.
By uttering the sounds.
【多选题】按照安全技术训练制度要求，消防救援站必须组建紧急救助小组，开展遇险指战员搜救专项训练，如：（）和逃生自救等，提升紧急救助能力。
A.
破拆
B.
搜索
C.
救助
D.
转移