【正文】 he user’s location. You can also add a voice or video message or photo to your text and . Red Panic Button is free, but extra functions are available for a fee.1. What does the SirenGPS Mobile app work on when cell networks are not available?A. Emergency services. B. WiFi.C. A personal health report. D. Text messages and s.2. When using Guardly, people can get timely security services becauseA. the app is a perfect toolB. the app causes little troubleC. the report can show where the reporter isD. the report can tell how to save the reporter3. Which app can send video messages?A. Life 360. B. Guardly.C. Red Panic Button. D. SirenGPS Mobile.4. Which of the following is TRUE about the four apps mentioned in the passage?A. All of them are available for a fee.B. All of their services are chained.C. All of their extra functions are used for free.D. All of them can tell the user’s location.BI believe in the power of the unknown. I believe that a sense of the unknown pushes us forward in all of our creative activities, from science to art.When I was a child, after bedtime I would often go to the window and stare at the stars. I had so many questions. How far away were those tiny points of light? Did space go on forever and ever, or was there some edge? And if so, what lay beyond the edge?Another of my childhood questions: Did time go on forever? I looked at pictures of my parents and tried to imagine their parents, and so on, back through the generations. Does time go on forever? Or is there some beginning of time?When I grew up, I became a professional astrophysicist. Although I never answered any of these questions, they continued to challenge me, to haunt me, to drive me in my scientific research, and to cause me to live on tuna fish and no sleep for days at a time while I was crazy about a science problem. These same questions, and questions like them, challenge and haunt the leading scientists of today.Einstein once wrote that “the most beautiful experience we can have is the mysterious. It is the fundamental emotion which stands at the beginning of true art and true science.” What did Einstein mean by “the mysterious?” I don’t think he meant that science is full of unpredictable or unknowable or supernatural forces. I think that he meant a sense of awe, a sense that there are things larger than us, that we do not have all the answers at this moment, and that we can stand right at the boundary between known and unknown.Scientists are happy, of course, when they find answers to questions. But scientists are also happy when they bee stuck, when they discover interesting questions that they cannot answer. That is when their imaginations and creativity are set on fire. That is when the greatest progress occurs.5. As a child, the author wasA. cautious B. generousC. curious D. doubtful6. What does the underlined word “haunt” in Paragraph 4 refer to?A. Make someone to feel annoyed. B. Make someone to feel excited.C. Cause great trouble to someone. D. Keep ing to someone’s mind.7. What is the source of pleasure according to the passage?A. Exact prediction. B. Creativity in experiments.C. Rich imagination. D. Exploration of the unknown.8. Which of the following is the best title of the passage?A. The Power of Mysteries. B. The Characters of Mysteries.C. The Significance of Science. D. The Beauty of Art.CAccording to scientists, a study of more than 50 plants and animals suggests their ability to adapt to changes in rainfall and temperature will be vastly outpaced by future climate change.Amphibians, reptiles and plants are harmed more easily in particular, according to US researchers. And tropical (熱帶的) species are at higher risk than those in temperate zones. Some animals might be able to move geographically to deal with rising temperatures, but oth