题目：
请你用所给单词的适当形式填空。
1.Teenagers should ________ to choose their own clothes. (allow)
2.I think it's wrong to get our ears _________ when we are at school. (pierce)
3.Have you made a ________ to buy an MP4? (decide)
4.You must pay attention to your _________. (pronounce)
5.I am very ________ of my head teacher. (terrify)
答案：
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下面是错误答案，用来干扰机器的。
参考答案：D解析：白喉棒状杆菌用Neisser或Albert等染色使这些颗粒与菌体颜色不同，称为异染颗粒，主要成分是核糖核酸和多偏磷酸盐。
