Question

    China plans to launch 156 small satellites by 2025 toprovide Internet services in low signal areas and placeswith adverse natural environment, according toChinaAerospace Science and Industry Corporation(CASIC).

Due to environmental conditionsof deserts,mountains and seas, half of the world's population has noaccess to the Internet, and the information deficiencyhamperslocal development.

It will be China's first broadband Internet accesssystem with small satellites hovering in low orbit, whichwill also help meet the needs of commercial space development.

The project, named Hongyun, plans to send the firstsatellite by 2019, and launch four more by 2020. By theend of 2025, CASIC plans to have all of the 156 satellites in operation.

The Hongyun Proiect, which focuses on communication,remote sensing and navigation, can offer communicationand Internet services for China and less-developed 3countries with reduced latency. Meanwhile, the projectcan also benefit emergency communication, sensor data collection and remote control of unmanned equipment.

Currently, international maritime satellites are widely used in communications in mountainous areas and airplanes, but those satellites, 36, 000 kilometers abovethe Earth, have time and signal delay as well as high cost for providing services.

The small satellites sent by the Hongyun Project will hover in low orbits only hundreds of kilometers to 1, 000 kilometers above the Earth, and thus could improve the Internet access. However, the low orbit satellites may face challenges in power supply, as they need more energyto reduce the influence of air-resistance compared to highorbit satellites. Experiments are needed to determinewhether solar energy alone is enough.

1.According to the passage, ________________.

A. 156satellites will be launched by the Hongyun Project by 2020

B. international maritime satellites can cause signaldelay

C. The Hongyun Project may not encourage commercialspace development

D. low orbit satellites are currently used widely incommunications in mountainous areas

2.The underlined word “hampers” in Paragraph2 probably refers to ________.

A. accelerates B. determines

C. prevents D. promotes

3.Which of the following is not included in the HongyunProject?

A. Communication and Navigation. B. Remote sensing.

C. Data collection. D. Solar energy.

4.Low orbit satellites need more energy in order to________.

A. provide more accurate data B. improve the Internet access

C. reduce the effect of air-resistance D. face more challenges

Answer

1.B

2.C

3.D

4.C

【解析】

这是一篇新闻报道。短文报道了中国的“宏运”工程，计划2025年发射156颗小卫星，为低信号地区和自然环境恶劣地区提供互联网服务。

1.细节理解题。由第六段“Currently, international maritime satellites are widely used in communications in mountainous areas and airplanes，but those satellites, 36, 000 kilometers above the Earth, have time and signal delay as well as high cost for providing services.”可知，目前，国际海事卫星已广泛应用于山区和飞机的通信中，但这些距离地球36000公里的卫星不仅存在提供服务的成本也很高，而且时间和信号延迟。所以国际海事卫星会造成信号延迟。故B选项正确。

2.词义猜测题。由第二段“Due to environmental conditions of deserts, mountains and seas, half of the world's population has no access to the Internet, and the information deficiency hampers local development.”可知，由于沙漠、山脉和海洋的环境条件，世界上一半的人口无法使用互联网，信息匮乏阻碍了当地的发展。所以第二段下划线的单词“hampers”可能指的是prevents“阻止”。故C选项正确。

3.细节理解题。由第五段“Meanwhile, the project can also benefit emergency communication, sensor data collection and remote control of unmanned equipment.”可知，同时，该项目还可用于无人设备的应急通信、传感器数据采集和远程控制。所以，太阳能不包括在“宏运”工程中。故D选项正确。

4.细节理解题。由最后段“However, the low orbit satellites may face challenges in power supply, as they need more energy to reduce the influence of air-resistance compared to high orbit satellites.”可知，然而，低轨道卫星可能面临电力供应方面的挑战，因为与高轨道卫星相比，它们需要更多的能量来减少空气阻力的影响。所以为了减少空气阻力的影响，低轨道卫星需要更多的能量。故C选项正确。