题目内容：

    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