Cloze3developments; Anyway; supply ; likely; urge; tackle; Another; practical; Someday; understand; severe; argument; travel; use; affectScience is interesting and exciting. Why? Science helps you ______ (1) the world in which you live. For example, science explains how airplanes fly and how birds find their way when they ________ (2) long distances. Besides, people use science to make discoveries that have _________ (3) value. One of these discoveries is the _______(4) of light to carry telephone messages through a glass wire. _________ (5) is the lengthening of human life through the use of heart pacemakers (心脏起搏器) and other mechanical devices (器械).In the future, there will ______ (6) be an endless number of new discoveries. These discoveries will ________ (7) your career and your daily life. Television, computers, and space shuttles (航天飞机) are part of today's world. Who can imagine what new, yet-to-be-discovered -__________ (8) lie ahead? In the future, scientists may discover how to predict earthquakes and how to produce an endless _________ (9) of energy. _________ (10) you may live and work in a space station in orbit around the earth. Scientists will continue to make discoveries that will change the world in which you live.