If any meteor 19 its fiery journey through the atmosphere and lands on Earth, it is called a meteorite.
答案：(B) survives
survives its fiery journey（挺過這趟熾熱的旅程）與後面的 lands on Earth 一起構成成為隕石的條件，也與前一句 Most meteors vaporize completely before they hit the ground 形成對比；approaches（接近）、confirms（證實）、targets（以……為目標）都與「存活下來」的語意不合。
survive 你的印象大概是在災難中活下來，而且會下意識覺得它後面要接介系詞，寫成 survive from 之類。實際上 survive 是及物動詞，後面直接接那個難關本身：survive the war（撐過戰爭）、survive the crash（在墜機中生還）。本句的 survives its fiery journey 就是這個用法——挺過那趟熾熱的旅程。
四個選項都是及物動詞，文法上都接得了 its fiery journey，可見這一格考的是語意，線索要往前一句找。前一句寫著 Most meteors vaporize completely before they hit the ground.（大多數流星在撞擊地面之前就完全氣化了）——本句用 If any meteor ___ ... and lands on Earth 接下去，講的正是那少數的例外。既然多數都在半路氣化，能落到地面的就是撐過來的那些。空格與後面的 lands on Earth 由 and 並列，兩個一起構成成為隕石的條件。
approaches（接近）代進去變成接近它的熾熱旅程，旅程不是一個可以接近的地點，語意不通。confirms（證實）與 targets（以……為目標）都把流星寫成了有意識、會判斷的東西，與整篇科學說明的語氣完全不合。鑑別度 56，分開的是有沒有把前一句的 vaporize completely 讀進來當對照——只看本句，四個動詞都塞得進去；讀到對比，答案只剩一個。
survive sth（撐過、在……中生還，及物，後面不加介系詞）、vaporize（氣化、蒸發）、hit the ground（落地、撞擊地面）、land on（降落在……上）、a streak of light（一道光跡）、fiery（熾熱的、火一般的）
Do you know the difference between the terms meteoroid, meteor, and meteorite in astronomy? Many people find these words confusing. However, the difference is all about their 16.
Meteoroids are far up in the sky. They are chunks of rock or metal that speed through space. Some are very large and may be hundreds of feet wide. Others 17 the size of a small stone. Most meteoroids travel around the sun in space and stay away from the Earth. However, sometimes a meteoroid will enter the Earth's atmosphere. Friction with the atmosphere will cause it to 18 and burn while traveling at high speed.
As a meteoroid begins to burn in the atmosphere, it leaves a streak of light. When this tail-like light is falling down toward the Earth, it is called a meteor, or a shooting star. Most meteors vaporize completely before they hit the ground.
If any meteor 19 its fiery journey through the atmosphere and lands on Earth, it is called a meteorite. Large meteorites can cause great explosions and much destruction on the surface of the Earth. 20 , Barringer Crater in the American state of Arizona, measuring 1,200 m in diameter and some 170 m deep, was produced by a meteorite impact.