Read the sentence from “Two Great Scientists.” He questioned scientific concepts—he only trusted them after he tried the experiments himself.

What is another word for concepts as it is used in the sentence?

A.
actions

B.
ideas

C.
jobs

D.
papers

Viktor is a russian university student. he wants to go to new york for a semester to study and improve his english. what should he do before he buys his plane ticket? a. buy a map of new york city b. pay for his program in new york c. apply for a us visa d. apply for a policy waiver