sandy wrote:
Because mercury has a variety of
innocuous uses, including in thermometer and dental fillings,
few people realize that it is one of the most _____________ substances on the planet.
A) Acidic
B) Irritating
C) Mundane
D) Deleterious
E) Disagreeable
F) Pernicious
Explanation: deleterious and pernicious are best fits.
The key words here are INNOCUOUS (benign, harmless) and FEW.
The sentence creates a contrast.
It says "Because mercury has many HARMLESS uses, FEW people realize that it is a __________ substance."
Let's predict HARMFUL for the blank.
Answer choice A (acidic) seems harmful, but no other answer choice is synonymous with acidic
Answer choice B (irritating) is different from harmful.
The answer choices that best fit our prediction are DELETERIOUS and PERNICIOUS
Answer: D & E
Cheers,
Brent