D. It is widely accepted by language teachers. Ks5u

　　50. We learn from the text that Sulzberger ________. Ks5u

　　A. spent seven years doing his research Ks5u

　　B. had majored in Russian at University Ks5u

　　C. has helped many students who have difficulties learning Ks5u

　　D. thinks it important for learners to involve themselves in the language they are learning Ks5u

　　D Ks5u

　　Space is full of fireworks: Galaxies smash into each other, dying stars explode and high-energy particles race toward us at the speed of light. The most powerful explosions in the universe are brilliant flashes of light called gamma-ray bursts. If you happened to fly through the neighborhood of a gamma-ray burst, you couldn’t miss the flare — it would be brighter than a million trillion suns. Ks5u

　　On September 15, 2008, a gamma-ray burst in the constellation Carina was recorded. This February, after studying the data, astronomers announced the gamma-ray burst was the most energetic explosion ever seen. Ks5u

　　Since the explosion was more than 12 billion light-years away, we didn’t see it. Ks5u

　　Gamma-ray bursts are nearly impossible to study from Earth because our atmosphere blocks the view. But scientists found a way around that problem. Last June, NASA launched a new telescope called the Fermi Gamma-ray telescope into orbit by strapping it on the back of a rocket. The instrument is helping scientists watch these deep-space fireworks displays. It’s named after Enrico Fermi, an Italian-American physicist who helped design the first atomic bomb and also studied gamma-ray bursts. Ks

【2017英语一轮复习学案：高三英语学生第二次自测题（一）外研版必修4】相关文章：

★ 2017届高考英语二轮复习大题冲关秘籍短文改错：体验真题（含解析）

★ （安徽专用）2014届高考英语一轮复习方案 作业手册（13）模块5 《Unit 13 People》（含解析） 北师大版必修1

★ 四川省2016届高考英语一轮复习课时作业（21） Module 3 Body Language and Non verbal Communication 外研版必修4

★ 常熟市2014高考英阅读理解语一轮（暑假）训练题（9）及答案

★ 四川省2016届高考英语一轮复习课时作业（42） Module 6 The World’s Cultural Heritage 外研版选修8

★ 四川省2016届高考英语一轮复习课时作业（20） Module 2 Traffic Jam 外研版必修4

★ 四川省2016届高考英语一轮复习课时作业（43） Module 1 Deep South 外研版选修8

★ 四川省2016届高考英语一轮复习课时作业（23） Module 5 A Trip Along the Three Gorges 外研版必修4

★ 2014届高考英语一轮复习课时作业(二十八)必修5Module 4《Carnival》（外研版）

★ 常熟市2014高考英阅读理解语一轮（暑假）训练题（4）及答案