首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
At one time, scientists thought the space between Earth and Sun was a vacuum. But we now know that the sun fills it with gusts o
At one time, scientists thought the space between Earth and Sun was a vacuum. But we now know that the sun fills it with gusts o
admin
2013-06-02
47
问题
At one time, scientists thought the space between Earth and Sun was a vacuum. But we now know that the sun fills it with gusts of hot, electrically charged atomic【B1】______ called the solar wind. Sometimes this wind blows hard. When the Sun’s outer layer is very active, it【B2】______ nearly one-third of its gaseous matter outward at supersonic speeds.
The U.S. government’s oceans and atmosphere agency NOAA, has a Space Environment Center to monitor these【B3】______ . The center’s director, Ernest Hildner, says【B4】______ solar emissions are not dangerous to people on the ground, but can be a【B5】______ to airplane occupants and astronauts. They can also shut down satellites, power networks, communications, and other technical systems.
Scientists have long known that solar storms are generated internally by the sudden【B6】______ of magnetic energy rising to the surface. Like a tightly【B7】______ rubber band, the Sun’s magnetic fields can suddenly snap into a new shape. Researchers have tried to predict solar storms by【B8】______ on these magnetic patterns. But【B9】______ . But how are they linked to solar storms?
New satellite data have provided answers to U.S. government scientists and colleagues from the aerospace firm Lockheed Martin. They have revealed that【B10】______ . Lockheed Martin physicist Karel Schrijver says【B11】______ .
【B8】
选项
答案
focusing
解析
focus意为“集中、聚焦”。由空后的介词on可判断此处为动词,由于前面有by,因此此处应该为动词现在分词形式。
转载请注明原文地址:https://kaotiyun.com/show/TaB7777K
0
大学英语六级
相关试题推荐
A、1476.B、1500s.C、1600s.D、1607.B短文中提到,到16世纪英语成为我们能够听懂的现代语言,故选B项。
Peoplewithdisabilitiescomprisealargepartofthepopulation.Itis【C1】_____thatover35millionAmericanshavephysical,【C2
Africanelephantshavebeenslaughteredatalarmingrateoverthepastdecade,largelybecause,theyaretheprimarysourceoft
A、Threeweeks.B、Nineweeks.C、Fiveweeks.D、Tenweeks.A数字细节题文章中明确提到每个学生在每年夏天需要进行三周的全职学习。
Itwasgoingtohaveroughlytheeffectofaneutronbombattackonhighstreetsandshoppingmalls.Thebuildingswouldbeleft
A、Theeffectsofhealthyreading.B、Theimportanceofsilentreading.C、Thevalueofdifferenttypesofreadingmaterials.D、The
A、Spillovermakesthelinebetweenworkandhomeunclear.B、Cellphonesseemtobeconvenienttofamilies.C、Cellphonesaffect
Manyprivateinstitutionsofhighereducationaroundthecountryareindanger.Notallwillbesaved,andperhapsnotall【B1】__
Healthfoodisageneraltermappliedtoallkindsoffoodsthatareconsideredmorehealthfulthanthetypesoffoodswidelyso
A、Heishostile.B、Heisindifferent.C、Heissnobbish.D、Heishelpful.DW:Idemandtoseethemanager.M:Themanagerisout,Ma
随机试题
螺栓联接的防松措施有哪些?
颌下区最常用的手术切口是
不参与下颌侧方运动的肌肉是
下列选项中,属于《唐律疏议》篇目名称的有()。
国际贸易的发展使保税制度由单一为商品贸易服务扩展成为加工制造、技术引进、服务贸易提供便利的海关监管制度,被经济学家称为“20世纪经济维他命”。()
导游常年接触各方游客,直接面对各色各样的意识形态、政治、经济、文化观点、价值观念和生活方式,这体现的是导游需直面“精神污染”。()
春秋战国后,各朝代为了防御北方游猎民族的入侵都在修筑长城,秦始皇的“万里长城”是()。
2015年上半年,福建省实现生产总值10468.34亿元,按可比价格计算,同比增长8.6%,增幅比一季度提高0.1个百分点,比上年同期回落1.1个百分点。分产业看,第一产业产值696.78亿元,增长3.0%;第二产业产值5842.21亿元,增长9.4%;第
社会上层建筑有两种职能:刽子手的职能和牧师的职能。
关系数据库管理系统能实现的专门关系运算包括选择、连接和【】。
最新回复
(
0
)