About how many scents can a human nose remember?
A. Around 500
B. Around 10,000
C. Around 50,000
D. Around 1 million

Random Topics:
First Conditional, Future Time ClausesAlthough, Though, In spite of, DespitePresent Progressive or Present SimpleModal Verbs & Reflexive PronounsPronouns of QuantityAdverbs, Modals, Preposition of timeRelative ClausesPresent/Past/Future Continuous TenseTime Clauses of FutureAdjectives with -ED and -INGOther quiz:
Grammar › ViewWhat ___ when you are in bed at night?
A. you usually read
B. do you usually read
C. are you usually reading
Grammar › View
Which sentence uses the correct verb tense?
A. I have tried all the types of Girl Scout Cookies.
B. I am tried all the types of Girl Scout Cookies.
C. I been trying all the types of Girl Scout Cookies.
D. I have been tried all the types of Girl Scout Cookies.
What is the single resistance that could replace all resistors in a circuit without changing the total current or voltage?
A. Equivalent resistance
B. Parallel resistance
C. Series resistance
D. Ohm’s law
Grammar › View
Choose the synonym of miserable.
A. unhappy
B. exhilatrated
C. exhausted