What is a crop duster?

[shahanan]

English Grammar Tests, Elementary Level

ESL/EFL Test #294 "Real Life: Cleaning Supplies (1)", question 8

A ......... is an old piece of cloth that is used to dust furniture and/or wipe down messy surfaces.

(a) crop duster
(b) tooth brush
(c) rag
(d) brush

English Grammar Tests, Elementary Level

ESL/EFL Test #294 "Real Life: Cleaning Supplies (1)", answer 8

A rag is an old piece of cloth that is used to dust furniture and/or wipe down messy surfaces.

Correct answer: (c) rag
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what is the mean crop duster

shahana

[Beeesneees]

It's a plane that is used to spray crops with pesticide.
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Cheers m' dears!