追星是青少年中普遍存在的现象。对此，认识正确的是（）
①明星崇拜是一种很不正常的现象 
②对明星不可盲目崇拜 
③对自己心目中的偶像应尊重 
④可以有心目中的偶像，但更需要认真地欣赏自己、发现自身的美好与独特 

根据句意、首字母提示或英文解释写出合适的单词。
（1）Don't play in the street. It's ____ (not safe).
（2） Your blue jeans____  (go well with) with your T-shirt very well.
（3） I'm a top student, and I have a healthy ____(the food you usually eat) and lifestyle.
（4） People usually think pigs are l____ . They say pigs do nothing but sleep and eat.
（5） We don't have e____ food for supper. Let’s buy some from the supermarket.
（6） A friend of mine is coming to v____  me this Saturday. I'm looking forward to seeing him.
（7） Every year we usually have a party to c____ Spring Festival.

如图，PM2.5也称为可入肺颗粒物，无法被鼻腔、咽喉等呼吸器官屏障阻挡，只能沉积在肺部。PM2.5会携带有害物质进入血液，由此会产生血管内膜增厚、血管狭窄等症状。下列关于PM2.5的说法不正确的是（    ）