Read again and mark the sentences T (true), F (false) or DS (doesn't say).
1 Mnemonics are used to aid understanding.
2 Abbreviations are a type of mnemonics.
3 There are three types of mnemonics.
4 Connection mnemonic creates a link between past and present.
5 Image mnemonics are mainly used by scientists.
6 Advertisers use mnemonics to boost sales. ​