题干

一个人行走经过一盏路灯,在走近过程中,路灯照射人,人的影子长短在变化,其变化情况是(   )

A:逐渐变短

B:逐渐变长

C:先变短再变长

D:先变长后变短

上一题 下一题 0.0难度 选择题 更新时间:2019-05-10 03:08:51

答案(点此获取答案解析)

A

同类题1

阅读理解

    A new American weather satellite could save more lives by better predicting extreme weather conditions. It will be in orbit(轨道)some 36,000 kilometers above Earth's surface. The National Oceanic and Atmospheric Administration, also known as NOAA, has been working with the National Aeronautics and Space Administration (NASA) on the project.

    NOAA officials are calling the new satellite GOES-R. That is short for a much longer name—the Geostationary Operational Environmental Satellite-R Series. NOAA said GOES-R could improve the nation's ability to observe weather conditions and make weather predictions. It said the satellite's operation would lead to more exact and timely weather forecasts watches and warnings.

    The government agency said the satellite will require testing of its six instruments and will be ready to work “within a year."

    "The next generation of weather satellites is finally here." said NOAA Administrator Kathryn Sullivan. She described GOES-R as one of the most complicated Earth-observing machines ever created. Sullivan said its instruments will be able to study Earth five times faster and with four times more detail than any other NOAA satellite currently in operation. She believes this will make the United States an even stronger, more “Weather-Ready" nation.

    A NOAA statement said the greater detail will help improve the agency's study of ocean storms, as well as “the prediction and warnings of severe weather. "In addition, GOES-R will be able to provide improved rainfall estimates (预计), which will lead to more timely and detailed flood warning. The statement also said that GOES-R will give better estimates of wind strength, as well as better measurement of fog, ice or lightning strikes.

    Craig Fugate serves as administrator of the Federal Emergency Management Agency. He says that the GOES-R satellite will improve the ability of people and organizations across America to prepare for, and react to, weather-related disasters.

同类题2

阅读下列材料,回答问题:

材料一   中世纪的欧洲,封建割据严重,王权衰弱,天主教势力空前强大,占据了支配地位,罗马教皇终于确立了对西欧的大一统神权统治。

14~16世纪,在西欧随着商品生产与交换的繁荣,封建生产方式开始瓦解,资本主义萌芽开始产生和发展,同时资产阶级开始兴起,他们反对教会和贵族的特权,强烈要求分享政治权利。

文艺复兴运动的思想家们批判中世纪教会的蒙昧、禁欲说教与封建的等级特权制度,宣传个人的自由、平等与欲望,提倡竞争进取精神与科学求知的理念。所有这些都对天主教会的统治产生了巨大冲击。

西欧资本主义进入原始积累时期以后,无论是国内发展还是海外掠夺,都需要有强大的国家作支撑。英国、法国等逐渐形成统一的民族国家,天主教会成为西欧各国强化王权道路上的一大障碍。

材料二   我日夜思索这句话(神的裁判表现在神身,正如……所写的:“义人必因信得生”),神终于怜悯我,让我明白:神的裁判就是义人蒙受神思所经历的裁判,就是信仰,而那段话的意思就是:《福音书》表现了神的裁判,慈悲为怀的神通过它让信仰使我们成为义人。

——马丁•路德

人的得救与否,不是靠斋戒、忏悔、赎罪,而是完全由上帝预定,人的意志无法改变。人在现世的成功与失败,就是得救与否的标志,就是“选民”与“弃民”的标志。

——加尔文