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
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
2014-08-25
36
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 the 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 too. 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.
To help readers understand how climate can change, the writer uses______.
选项
A、examples
B、a story about the seashore
C、order of importance
D、a strong argument
答案
A
解析
作者列举了大量例子证明气候变化的原因。
转载请注明原文地址:https://kaotiyun.com/show/fAxO777K
0
成人本科学位英语
相关试题推荐
Thereason(that)(manyofhomemakers)buykitchenappliances(厨房用品)is(that)theywanttodotheirtasks(inashorterlength
Hefailedhisexam,______provedthathewasn’tworkinghardenough.
Investigatorshavetriedtofindouthowlongapersoncangowithoutsleep.(Passage1)
ThenumberofInternetusersinChinahasincreasedby28percentand【C1】______87million,accordingtoa【C2】______released
在此期间,煤炭的销售价格及其利润会随着国际市场的需求变化而上下波动。
他起得很早为的是赶上第一班公共汽车。
如果让我来决定我们是要一个没有自行车的城市,还是要一个没有汽车的城市,我会毫不犹豫地选择后者。
煤炭是人们最早大规模开采的矿物质之一,其目的是为供暖提供原料。
随机试题
______fortheirhelp,wewouldnotshaveovercomethedifficulties.
A.男性,32岁,间断剑突下疼痛伴返酸半年,不规律服用抑酸药物,突发恶心呕吐,呕吐物最初为咖啡渣样物,后为暗红色血液,伴黑便,经禁食、抑酸药物治疗后好转B.男性,23岁,一周前腹部受重物撞击,当时自觉右上腹疼痛,静卧休息后疼痛缓解,6小时前突发右上腹阵发
患儿,女,6个月。出生后1个月发现左腮腺区膨隆。渐长大,触诊较硬,体位移动试验(±),全身情况良好。该患儿目前最不恰当的处理是
风化岩和残积土的勘探取样应采用()。
序列是指按照某种规律排列的一列数据,如等差数列、等比数列等。使用填充柄可自动根据已填入的数据填充序列的其他数据。()
2011年3月,某市财政局派出检查组对该市某大型企业甲(国有)的会计工作进行了检查。检查中发现以下情况:(1)2010年1月10日,甲企业收到一张应由甲企业和乙企业共同负担费用支出的原始凭证,甲企业的会计人员A以该原始凭证及应承担的费用进行了账务处理,并
下列关于家庭生命周期的各阶段不同的理财重点中,不合适的是()。
电影院的售票处有6位观众在买票,他们分别是张华、李华、王华、赵华、李伟和王伟。已知:(1)王华既不排在队伍的前端也不排在队伍的末尾。(2)王伟不在队伍的最后面,在她和队伍末尾之间有两个人,位于队伍末尾的不是李伟。(3)赵华没有排在队伍的最前面,他前面
在微机中,西文字符所采用的编码是___________。
Whoismakingthetelephonecall?
最新回复
(
0
)