阅读理解 Welcome to Exploring the Environment TM (ETE). The ETE online series, which (47) 1 an integrated approach to environmental earth science through modules (模块) and activities, is developed at the NASA Classroom of the Future TM, at Wheeling Jesuit University. It is supported by NASA''s Information Infrastructure (基础设施) Technology and Applications (IITA) Program, which (48) 2 public use of Earth and Space Science remote sensing databases over the Internet. The vision of the ETE online series is to promote science-literate and reflective students who are knowledgeable of the earth''s processes and their responsibilities. The problems in the ETE modules and activities ask students to address human activities and their (49) 3 upon the environment. The modules and activities incorporate environmental issues such as water quality, deforestation, biodiversity, volcanoes, ozone depletion, and (50) 4 climate change. Featuring problem-based learning (PBL), the ETE series provides students with tools to (51) 5 scientific, social, political, and cultural aspects of controversial, authentic environmental problems. Standard problem-solving models, online resources that include relevant satellite imagery, and (52) 6 for extended inquiry are available to students. Student-directed research generally lasts a (53) 7 of five weeks but often extends throughout the semester. Working cooperatively or (54) 8, students (55) 9 in problem-based modules and activities that require them to formulate problem statements; to collect and analyze data; and then to prepare and present their findings, solutions, or recommendations. These findings, solutions, or recommendations should (56) 10 students'' understanding and awareness of the dynamics of both physical/biological and socio-economic variables. Word Bank A) engage B) solve C) global D) promptly E) investigate F) individually G) act H) impacts I) demonstrate J) serve K) features L) minimum M) recommendations N) primary O)facilitates