阅读理解（七) 科技说明
A ［2019·泰安］
Earlier this year, China achieved a new milestone（里程碑) in space rearch. On January 3， 2019， Chang’e—4 became the first lunar probe(月球探测器) in history to successfully land on the far side of the moon。
The Earth’s gravity（重力) slows the moon’s rotation(自转）， matching it to the speed of its orbit(公转）. Therefore, the far side of the moon is almost “dark" and has never been en. It's this n of the unknown that makes the far side of the moon such an interesting place for scientific and 光盘行动英语作文space rearch. Being blown by solar(太阳的） winds, the far side may have the special minerals(矿物质）. For this reason, Chang’e—4 will study the effect of solar winds on the lunar surface and any mineral found by the spacecraft. Chang’e-4 is also carrying flower eds, potatoes and silkworm eggs to e whether life is possible on the moon.
If it is, then the moon will become a possible choice for space travel in the future.
However, rearch of the “dark" side isn’t easy。 As the side is blocked（阻断） off from us, radio noi coming off Earth is also blocked. This is why China’s relay satellite（中继卫星) Queqiao was nt up in May， 2018。 Thanks to Queqiao, the communication problem between Earth and Chang’e-4 has been well solved。
海洋世界手抄报Power supply(电源供应) is also a challenge to the task。 Chang’e-4 gets energy from the sun through its solar panels。 As we know, a lunar day has the length of 28 Earth days. After Chang'e—4 was nt up on December 8， 2018， it took the probe over 20 days to orbit the moon to be in a position to be able to land in moon daylight and u its solar panels.
Luckily， everything goes well。 Chang’e-4 has worked on the “dark” side for over 5 months. It has nt back many photos of the far side of the moon and has been ud to carry out some scientific experiments。
The New York Times ud the word “groundbreaking” to prai the task and wrote that “it will offer help to the history and development of the moon。”
1.When was Chang’e-4 nt up？( ）
A.In May, 2018.
B.On December 8, 2018.
C.On January 3, 2018.
D。The passage doesn’t怠慢拼音 tell us。
2.The main tasks of Chang'e-4 don’t include .( )
A.studying if life is possible on the moon
B.studying the effect of solar winds on the lunar surfaceppt水印
C。studying the communication problem between Earth and other probes
D。rearching any mineral found by the spacecraft
3。The meaning of the underlined word “groundbreaking” in the last paragraph is the clost to “ ”.( )
A.harmful B。unpredictable
C.risky D.pioneering
4.According to the passage, which of the following statements is NOT true?（ )
A.Chang’e—4 has nt back many photos of the far side of the moon。
B。A lunar day has the length of 28 Earth days。
C.China’s relay satellite Queqiao was nt up in order to offer power to probes。
D.Chang’e-4 is the first lunar probe in history that has successfully landed on the “dark" side of the moon。
B ［2019·绵阳］
Chine companies lead in global 5G patent applications(专利应用） with Huawei taking the crown,according to a report by IPlytics， an authorized patent data company。 Three companies from China were included in the top 10 list of 5G Standards-Esntial Patents （SEPs) family owners。 Huawei ranked first。 ZET Corp. 吃香and China Academy of Telecommunications Technology（CATT） grabbed fifth and ninth places, respectively。
Chine companies topped the list for most 5G SEPs applications in communication systems by the end of April 2019， accounting for 34 percent of the world’s total。 Chine tech giant Huawei has taken a leading role by owning 15 percent of SEPs, according to the report Who Is Leading the 5G Patent Race？
5G SEPs are patents that any company will have to u when carrying out 5G technology and no one can avoid them。
Different from 3G and 4G technologies，5G technology will influence various industries and encourage the appearance of many new products， rvices and industries。
The automotive ctor will most likely be one of the first industries to depend on 5G, which will connect vehicles to other vehicles， roadsides, traffic lights, buildings and the Internet, according to the report。
“It is 5G that is going to be a huge jump forward for communication systems becau only with 5G’s higher bandwidth can a number of applications be more advanced（尖端的) and ud by most consumers,"said Nicole Peng， nior director of the market rearch company Canalys.
As 5G technology has combined various industries and technologies, the number of 5G磅礴的读音 1954年属什么SEPs ro to more than 60，000 globally蒜蓉大虾 by the end of April 2019， the report said。
