Scientists warn that many of the world’s great cities are _______ flooding.

Many scientists have linked this illness to the habit of staying up late.

_______ does not exist yet, but scientists are working hard to create computers that can think like human beings.

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) of the following question

There has been a hot debate among the scientists relating to the pros and cons of using robotic probes to study distant objects in space.