kilometres per hour. Such events can expose astronauts to a deadly amount, can disable satellites, cause power failures on Earth and disturb communications," Professor Harrison added. The risk is greatest during a solar maximum when there is the greatest number of sunspots.

　　Next week in America, NASA is scheduled to launch a satellite for monitoring solar activity called the Solar Dynamics Observatory (SDO), which will take images of the Sun that are 10 times clearer than the most advanced televisions available.

　　The Rutherford Appleton Laboratory helped to make the high-tech cameras that will capture images of the solar flares (太阳耀斑) and explosions as they occur.

　　Professor Richard Hold away, the lab's director, said that the SDO should be able to provide early warning of a solar flare or explosion big enough to affect satellite communications on Earth "If we have advance warning, we'll be able to reduce the damage. What you don't want is things switching off for a week with no idea of what's caused the problem," he said.

　　72. The phrase "communications blackout" in paragraph 1 most probably refers to

　　during the 2017 Olympics.

　　A. the extinguishing of the Olympic torch

　　B. the collapse of broadcasting systems

　　C. the transportation breakdown in London

　　D. the destruction of weather satellites

【2016届高考英语精品专题必做练习：阅读理解（15）】相关文章：

★ 2017届高考英语二轮复习大题冲关秘籍阅读理解七选五：考纲解读（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (63)

★ 2013高考英语冲刺-专项篇 4基础写作

★ 浙江省湖州市2014高考英语阅读理解一轮（暑假）精炼（12）含答案

★ 2017高考四川省广安市英语阅读理解一轮系列训练：7（含解析）

★ 2017届高考英语二轮复习大题冲关秘籍阅读理解七选五：解题策略（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (58)

★ 2016届高考英语精品专题必做练习：阅读理解（10）

★ 常熟市2014高考英阅读理解语一轮（暑假）训练题（7）及答案

★ 2014高考英语（新人教版）一轮基础训练（9）A、B卷（附答案或解析）