93 263- We can infer from the passage that one reason why some weeds can be particularly troublesome is --------. A) that they resist chemical weed killers
B) as they produce large quantities of seeds several times a year
C) because new plants can grow out of the damaged parts of a plant
D) that they can become dormant when weed killers are used
E) since it is impossible to kill them in any way
264- It is understood from the passage that some chemical weed killers have been specially
