[ Vocabulary ]
An event, condition, or factor that can be changed or controlled in order to study or test a hypothesis in a scientific experiment.
A. field study
B. trials
C. evidence
D. variable
Random Topics:
Modal Verbs for PossibilityAdverb Of PlaceActive and PassiveModals and AdviceDirect Object and Indirect ObjectModals for ObligationGrammar SuffixesIntermediate PrepositionsIdentifying Sentence TypesPassive Voice - Present ContinuousOther quiz:
Vocabulary › ViewThe students all participated in a sit-in for equal rights at the segregated lunch counter.
A. protest that involves refusing to leave a place
B. demonstration that involves marching in the street
C. banquette
D. groom’s supper
Irregular Verbs › View
I have ______________ English for many years.
A. taught
B. thought
C. tough
Past Continuous Tense › ViewSomeone tried to steal her phone while she … for a railway ticket.
- queued
- was queuing
Tenses › View
When Bob went to bed last night, he __________ (brush) his teeth.
A. brushes
B. brush
C. had brushed
D. had brush