—The difficult maths problem has been solved by Tom at last.
— Indeed; and the ___ way Tom worked out the problem impressed the teacher deeply.
Tai Lihua is a Chinese ____ (A. dancer B. singer). She is very beautiful.____ (A. With B. As )a child，she became deaf and dumb(哑的). She couldn't hear ____ (A. or B. and )say. She was very sad. Later，she had a teacher. The teacher taught ____ (A. she B. her)to dance. She was very hardworking. She danced very ____ (A. well B. good). Now she is very famous.
有一种电子牙刷（如图所示），它能发出超声波，直达牙刷棕毛刷不到的地方，这样刷牙既干净又舒服。关于电子牙刷，正确的说法是（ ）。
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