Why did Natterson-Horowitz and Bowers write the book?
A、To better educate human teenagers.
B、To better understand their own children.
C、To research on adolescent peer pressur
D、To get to know adolescent drinking problem.
I . Phonetics(5 points)Directions:In each of the following groups of words, there are four underlined letters or lettercombinations marked A, B, C and D. Compare the underlined parts and identify theone that is different from the others in pronunciation. Mark your answer by blackeningthe corresponding letter on the Answer Sheet.1.