I'm not sure（1） 　     　is more frightened， me or the female gorilla（大猩猩）that suddenly appears out of nowhere． I' m walking on a path in the forest in the Central African Republic． Unexpectedly， I'm face﹣to﹣face with the gorilla， who begins screaming at（2） 　     　top of her lungs． That makes her baby scream， and then a 400﹣pound male appears．He screams the （3） 　     　（loud ）of all． The noise shakes the trees as the male beats his chest and charges toward me． I quickly lower myself， ducking my head to avoid （4） 　     　（look）directly into his eyes so he doesn't feel （5） 　     　（challenge）．

   My name is Mireya Mayor． I'm a （6） 　     　（science）who studies animals such as apes and monkeys． I was searching（7） 　     　these three western lowland gorillas I'd been observing． No one had seen them for hours， and my colleagues and I were worried．

When the gorillas and I frightened each other， I was just glad to find （8） 　     　（they）alive．True to gorilla′s unaggressive nature， the huge animal（9） 　     　（mean）no real harm．He was just saying： " I'm king of this forest， and here is your reminder! "Once his message was delivered， he allowed me （10） 　     　（stay）and watch．