根据首字母或汉语提示，用单词的正确形式填空。

小题1:The climate is becoming worse and worse because of the ______________(毁坏) of the environment.

小题2:The monster is so ______________(神秘) because nobody has ever seen it.

小题3:Samantha is always s______________ about everything, and she never trusts anyone.

小题4:______________(组合) of letters may be read in different ways.

小题5:Callum is one of his best c______________, and they work in the same office.

小题6:Everyone is ______________(禁止) to copy other’s homework.

小题7:L______________ is the study of languages.

小题8:C______________ with his house, this one is relatively cheap.

小题9:The shop sells v______________ of goods, which sometimes make it hard to choose.

小题10:We were shocked by the ______________(宣布) that the foreign minister died.

头孢菌素类药物不易产生交叉过敏，因为其过敏原的主要决定簇是（）

A.头孢菌素醛

B.头孢菌素胺

C.青霉噻唑基

D.7位酰胺取代基

E.3位取代基