A If you want a B real effective stereo that C plays music clearly, you’d D better buy a graphic equalizer(图像均衡器).

单项选择题We found the poetry Aquite pleasedin Bform; I Chadnever seen one like Ditbefore.

单项选择题A Afour-yearstudy by the Infant Testing Center suggests that Bbabiesfeel more Ccomfortablyaround Dotherbabies than with adults.