"Here is a liquid as colourless as water, almost tasteless, quite imperceptible in coffee, wine, or any other beverage." In this sentece, "imperceptibble" means____ .
A. indistinguishable
B. noticeable
C. strong
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What does the name "life-cleaner" imply?
A. It implies making somebody innocent.
B. It implies taking away one's life.
C. It implies helping somebody out of hard times.
In the last paragraph, what does "au revoir" mean?
A. Wish you good luck.
B. See you next time.
C. Farewell
What's the tone of this text?
A. Persuasive
Black humor
Critical
D. Ironic
"Their effects are permanent, and extend far beyond the mere casual impulse. But they include it. Bountifully, insistently. Everlastingly" In this sentence, the word "bountifully" means ____ .
A. perfectly
B. meagrely
C. generously