填空题
将以下词的正确形式填入对应空中explore ，transmit ，resource，emerge ，yield ，pose ，assume，confidence，inherit ，comprehensive
It was about 30 seconds before Alex（）from the water，we were quite scared.
emerged
填空题 It is so difficult to（）the bottom of the ocean because some parts are very deep.
填空题 Given the chance to show his ability，he regained （）and began to succeed in school.
单项选择题 What is the main idea of the text？（）
