下列有关物质性质的应用正确的是（　　）

制作口腔上皮细胞临时装片时，需用牙签在口腔什么位置轻刮几下？（  ）

根据所给首，与出所缺单词。
I can see a v ____  tape on the desk.
Li Gang likes m ____  , but he doesn’t music.
The p ____  is very good. I also want to buy one.
This r____  is very big, but that one is very small.
I n ____ a pen, two pencils and some books.