In the 'high-amplitude sucking-preference procedure', stronger language preference is shown by A．more sucking behaviors. B．greater speech attentiveness. C．more exposure to that language. D．longer sucking time.
A.more B. B．greater C. C．more D. D．longer E.
【参考答案】
A 事实细节题。根据题干中的high-amplitudesucking-preferenceprocedure定......