题目内容
请用不超过350字的篇幅，概述胡晓义访谈的主要内容。 要求：概述内容全面，思路清晰，表达简洁，条理清楚。
查看答案
搜索结果不匹配？点我反馈
更多问题
Unless we spend money to spot and stop asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say some scientists. Asteroids are bigger (36) of the meteoroids (流星) that (37) across the night sky. Most orbit the sun far from Earth and don’t (38) us. But there are also thousands of asteroids whose orbits put them on a (39) course with Earth. Buy $ 50 million (40) of new telescopes right now. Then spend $10 million a year for the next 25 years to (41) most of the space rocks. By the time we (42) a fatal one, the scientists say, we’ll have a way to change its course. Some scientists favor (43) asteroids off course with nuclear weapons. But the cost wouldn’t be cheap. Is it worth it (44) . Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500,000 years. (45) . "If we don’t take care of these big asteroids, they’ll take care of us," says one scientist. "It’s that simple." (46) "The world has less to fear from doomsday (毁灭性的) rocks than from a great nuclear fleet set against them," said a New York Times article.
伤寒杆菌感染（）
胃壁细胞分泌（）
Na+通道失活相当于（）。
微信支付 
支付宝支付