Reading Comprehension :52. When we read online, she says, we tend to become “mere decoders of information.”洋蔥2019 年 5 月 31 日0 Comments Continue Reading
Reading Comprehension : 53. Our ability to interpret text, to make the rich mental connections that form when we read deeply and without distraction, remains largely disengaged.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage II : 54. A study of 100 reefs, published in Science Magazine, shows the interval between bleaching events in recent decades has shortened dramatically.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage II : 55. It has gone from once every 25-30 years in the early 1980s to an average of just once every six years today.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage II : 56. Bleaching is caused by anomalously warm water, which prompts coral polyps to eject their symbiotic algae.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage II : 57. This drains the corals of their color and is fatal unless conditions are reversed in a reasonably short time.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage II : 58. But even if temperatures fall back quickly, it can still take many years for damaged reefs to fully recover.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage II : 59. Aside from their beauty, tropical corals provide important ecosystem services upon which the livelihoods of many millions of people depend.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage II : 60. Reefs, for example, afford coastal protection from big waves, storms, and floods; they also act as key spawning and nursery grounds for economically important fish and other aquatic species.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage II : 61. This study concentrates on the climate challenge to corals, but many reefs are also experiencing other stresses, including pollution, overfishing and habitat destruction.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage III : 62. Physicist Stephen Hawking recently warned of the dangers of artificial intelligence and “powerful autonomous weapons.”洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage III : 63. Autonomous technology is racing forward, but international discussions on managing the potential risks are already underway.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage III : 64. Recent advances in machine intelligence are enabling more advanced weapons that could hunt for targets on their own.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage III : 65. For the past several years, a consortium of nongovernmental organizations have called for ban on lethal autonomous weapons before they can be built.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage III : 66. One of their concerns has been that robotic weapons could result in greater civilian casualties.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage III : 67. However, opponents of a ban have countered that autonomous weapons might be able to more precisely target the enemy and avoid civilians better than humans can, just as self-driving cars might someday make roads safer.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage III : 68. Machine image classifiers, using neural networks, have been able to beat humans at some benchmark image recognition tests.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage III : 69. Machines also excel at situations requiring speed and precision.洋蔥2019 年 5 月 30 日0 Comments Continue Reading
Passage III : 70. These advantages suggest that machines might be able to outperform humans in some situations in war.洋蔥2019 年 5 月 30 日0 Comments Continue Reading