化学与人类生活密切相关，下列与化学有关的说法不正确的是
A．开发和推广新能源是实现低碳生活的途径之一
B．化学药品着火，要立即用水或泡沫灭火器灭火
C．食品添加剂虽能改善食物味道等，但需限量使用
D．化石燃料燃烧和工业废气中的氮氧化物均是导致“雾霾天气”的元凶
答案：B
题目分析：A、开发和推广新能源可以减少碳的燃烧，是实现低碳生活的途径之一，正确；B、化学药品着火，像钠着火就不能用水或泡沫灭火器灭火，错误；C、食品添加剂用多了，会造成对身体的伤害，正确；D、导致“雾霾天气”的原因有多种，化石燃料燃烧和工业废气中的氮氧化物均是导致“雾霾天气”的原因之一，正确。
| The ocean bottom—a region nearly 2.5 times greater than the total land area of the Earth —is a vast frontier that even today is largely unexplored and uncharted. Until about a century ago, the deep-ocean floor was completely inaccessible, hidden beneath waters averaging over 3,600 meters deep. Totally without light and subjected to intense pressures hundreds of times greater than at the Earth’s surface, the deep-ocean bottom is a hostile environment to humans, in some ways as forbidding and remote as the void of outer space. Although researchers have taken samples of deep-ocean rocks and sediments for over a century, the first detailed global investigation of the ocean bottom did not actually start until 1968, with the beginning of the National Science Foundation’s Deep Sea Drilling Project (DSDP). Using techniques first developed for the offshore oil and gas industry, the DSDP’s drill ship, the Glomar Challenger, was able to maintain a steady position on the ocean’s surface and drill in very deep waters, extracting samples of sediments and rock from the ocean floor. The Glomar Challenger completed 96 voyages in a 15-year research program that ended in November 1983. During this time, the vessel logged 600,000 kilometers and took almost 20,000 core samples of seabed sediments and rocks at 624 drilling sites around the world. The Glomar Challenger’s core samples have allowed geologists to reconstruct what the planet looked like hundreds of millions of years ago and to calculate what it will probably look like millions of years in the future. Today, largely on the strength of evidence gathered during the Glomar Challenger’s voyages, nearly all earth scientists agree on the theories of plate tectonics and continental drift that explain many of the geological processes that shape the Earth. The cores of sediment drilled by the Glomar Challenger have also yielded information critical to understanding the world’s past climates. Deep-ocean sediments provide a climatic record stretching back hundreds of millions of years, because they are largely isolated from the mechanical erosion and the intense chemical and biological activity that rapidly destroy much land-based evidence of past climates. This record has already provided insights into the patterns and causes of past climatic change—information that may be used to predict future climates. |
The word "inaccessible" underlined in Paragraph 1 is closest in meaning to______.
A．unrecognizable
B．unreachable
C．unusable
D．unsafe