首页
登录
职称英语
It has been known for decades that the appearance of sunspots is roughly periodi
It has been known for decades that the appearance of sunspots is roughly periodi
游客
2024-11-17
16
管理
问题
It has been known for decades that the appearance of sunspots is roughly periodic, with an average cycle of eleven years. Therefore, the incidence of solar flares and the flux of solar cosmic rays, ultraviolet radiation, and X-radiation all vary directly with the sunspot cycle.
选项
答案
连词误用,应把Therefore改为And。
解析
第一句说“几十年来,人们认为太阳黑子的出现大致是周期性的,平均11年为一个周期。”第二句的意思是“太阳耀斑的发生和太阳宇宙射线、紫外线以及X射线的放射量都随着太阳黑子循环而变动。”这两句之间是并列关系,而不是因果关系,因此应用And连接。
转载请注明原文地址:https://tihaiku.com/zcyy/3848904.html
相关试题推荐
Familyplanning,afterdecadesofenforcement,istobebasicallychanged,w
Fordecades,thetelevisionwastheflagshipofanyconsumer-electronicspro
Fordecades,thetelevisionwastheflagshipofanyconsumer-electronicspro
Fordecades,thetelevisionwastheflagshipofanyconsumer-electronicspro
Fordecades,thetelevisionwastheflagshipofanyconsumer-electronicspro
Fordecades,thetelevisionwastheflagshipofanyconsumer-electronicspro
Itisasuccessinsofarasmorewomenretaintheiryouthfulappearanceto
Itisasuccessinsofarasmorewomenretaintheiryouthfulappearanceto
Itisasuccessinsofarasmorewomenretaintheiryouthfulappearanceto
Itisasuccessinsofarasmorewomenretaintheiryouthfulappearanceto
随机试题
ThestoryinvolvesashipwreckontheWestcoastofAfrica.Thepassengerso
Mr.Smithhadanunusual______:hewasfirstanofficeclerk,thenasailor,an
[originaltext]W:Today,millionsofusarenowaddictedtochatrooms,e-maila
Lastyear,Christmaswasthebiggestsingledayfore-booksalesbyHarperCo
当代许多企业会选择纳入产业链上下游,通过整理跟踪小微企业与上下游间的业务往来经营
A.37.5~38℃ B.39.1~41℃ C.38.1~39℃ D.>4
(共用题干)患者男,44岁。排便后痛,昨日突然加剧,肛口可及一肿块,直径1.5c
属于宫颈癌癌前病变的病理变化是A.宫颈鳞状上皮化生 B.宫颈鳞状上皮化 C.
糖尿病合并心血管疾病者可选用()A.格列吡嗪 B.格列齐特 C.格列喹酮
对建设工程施工及安装所需物资的预测和安排,指导和组织建设工程物资采购、加工、储备
最新回复
(
0
)