IV. Fill in the numbered blank in the passage with ONE suitable word from the box. (1.5pts) killed predict in scientists animals disastrous A recent investigation(cuéc kh¶o s¸t) by (1)……….. at the U.S. Geological Survey shows that strange animal behavior might help (2)……………. future earthquake. Investigators found such occurrences in a ten-kilometer radius or the epicenter (t©m ®iÓm) of a recent quake. Some birds screeched(kªu thÐt) and flew about, dogs yelped(kªu ¨ng ¼ng) and ran around uncontrollably. Scientists believe that (3) ………….. can perceive these environmental changes several days before the mishap. (4)………………. 1976 after observing animal behavior, the Chinese were able to predict a (5)……….. earthquake. Although hundreds of thousands of people were (6) ….millions of other people were saved.