[ Vocabulary ]
Mathematical geneticists showed that the gene frequency change by __________ is much smaller than the change by natural selection.
A. mutation
B. forest fire
C. invisible
D. vision
Random Topics:
Verb Moods and Vague PronounsModals and PrepositionLinking Words and ConjunctionConjunctive Adverbs and PunctuationPassive Voice Present SimpleVerb FormsComparison DegreeAdverb of FrequencyGerund or InfinitiveVerbs of movementOther quiz:
Grammar › ViewI felt a deep _________ when my grandfather passed away.
A. sadness
B. sad
C. sadly
D. saded
Common Grammar Mistakes and Spelling Tips › View
She was laying on the beach.
A. Correct
B. Incorrect
Will vs Verb Infinitives › ViewChoose the correct answer:
We love to _________
A. pizza
B. dance
Phrasal Verb › View
look for sth in an appropriate book/list
A. look up
B. look through
C. look round
D. look over