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`31`. `B`

`-` DC `:`

`+` There are many plants used in herbal medicine.

`+` Herbs may be gentler than some pills.

`+` However, this does not mean that anyone can them in any way.

`+` Some herbs can be harmful,too

`32`. `B`

`-` DC `:`  Herbal medicine works more slowly than most pills

`33`. `B`

`-` DC `:` Many people think herbs are gentle and help your body.

`34`. `D`

`-` harmful `:` có hại `><` harmless `:` không có hại `/` vô hại

`35`. `C`

`-` DC `:` Some herbs can be harmful, too. Too much rosemary can be very bad for your stomach. It can make you sick

`36`. `B`

`-` DC `:` Herbal medicine is becoming popular again, as people become more interested in their health.