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
专升本
Are you planning a vacation? If you like hot and extremely dry summers, go to Phoenix, Arizona. For hot temperatures but lots of
Are you planning a vacation? If you like hot and extremely dry summers, go to Phoenix, Arizona. For hot temperatures but lots of
admin
2011-02-27
53
问题
Are you planning a vacation? If you like hot and extremely dry summers, go to Phoenix, Arizona. For hot temperatures but lots of rain and thunderstorms, try Miami, Florida. If you want average temperatures and rainfall, St. Louis, Missouri, is the spot. Or if you’ re a cold weather fan, head to Fairbanks, Alaska. Its winters are very cold with little precipitation. Each of these cities has a certain type of weather. The average weather for a place over many years is called climate, and in no two places in (he world is it exactly the same. How can this be?
Many things in nature, such as sunshine, temperature, and precipitation, affect climate. Nearness to mountain, oceans, and large lakes affects it loo. Another factor is altitude, or height above sea level. Air cools as altitude increases. So a city at a higher altitude may be colder than one at a lower altitude. Finally, winds affect climate. They move heat and moisture between the oceans and continents. Winds keep the tropics from overheating. They keep the polar regions from getting overly cold.
Climate changes over long periods of time. Some scientists think, for example, that the earth’ s climate changed at the time of the dinosaurs. They think the dinosaurs died because of the change. What causes a climate to change? One possible cause may be changes in the sun. Sunspots, for example, are cool, dark spots that form on the sun. Sunspots may decrease precipitation on the earth and cause unusually dry periods. Changes in the atmosphere may change climate too. Volcanic eruptions, for instance, release solid particles into the air. These particles may form a cloud that blocks out the sun ’ s heat. Human activity is another cause of climate change. Air pollution and the reduction of forest cover may have long-term effects on climate.
Change in climate may have caused______.
选项
A、dinosaurs to die
B、dark spots to form on the sun
C、volcanic eruption
D、air pollution
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/cSvC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
《氓》选自《诗经》中的
下列关于《种树郭橐驼传》的表述,不正确的一项是
IntheUnitedStatesthefamilyplaysanimportantroleinmostholidayactivities.NovemberisNationalAdoptionMonth.Wevisi
Ifyou’refindingittoughtolandajob,tryexpandingyourjob-huntingplantoincludethefollowingstrategies:Setyourtarg
Whatisthemaintopicofthepassage?Whatcanbeinferredaboutdropsofwaterlargerthan0.008inchindiameter?
Mr.andMrs.Smitharesoexcitedtoday,fortheybought______yesterday.
Laurawasmarriedfor6months.Herhusbandwasusingdrugs.Shedidn’twanthersonorherunbornbabytolivethatway,butsh
Itis______myfatherworked______Iworknow.
Thankyouforhelpingme______themathproblem.
Sometimesteensneedtohavesometimeawayfromtheirfamilies.Theymaywant’tomoveoutofthefamilyhomeforawhile.
随机试题
结合实际,论述我国行政职能转变的必然性及其主要内容。
下列关于桂枝汤煎服方法的叙述中,符合《伤寒论》原方要求的是
患者,男,21岁。6周前踢足球时扭伤左膝,疼痛至今未愈,行走时常有弹响和交锁。最佳的辅助检查是
下列性质属于湿邪特性的是
A.管间侧支B.根管侧支C.根尖分歧D.根尖分叉E.侧孔发自根管的细小分支,与根管成垂直角度,贯穿牙本质和牙骨质通向牙周膜的结、构称为
毒毛花苷K的主要药理作用有( )。
沙盘游戏被正式创立后,早期主要用于()。
在学习氯气的相关性质时,学习完物理性质教师没有马上学习化学性质,而是以快问快答的形式来检验学生对氯气物理性质的掌握情况,这种评价方式属于()。
孩子过多玩网络游戏,父母应适当加以______。
A.条件(1)充分,但条件(2)不充分B.条件(2)充分,但条件(1)不充分C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分D.条件(1)充分,条件(2)也充分E.条件(1)和(2)单独都不充分,两个条件联合起来也不充分
最新回复
(
0
)