阅读段落,掌握大意,选择最适合的单词填入空中 In the 21st century, weather no longer brings military operations to a _____ or force a change in targets. GPS now ____ cruise missiles and other smart _____ to home in on their targets. But the weather is still a factor that must be _____with, especially with precision-guided weapons that must be highly _____ to be effective. (备选单词 reckoned halt weapons allow accurate )