题型：语法填空（语篇） 题类：模拟题 难易度：困难
辽宁省辽南协作校（朝阳市）2021届高三英语第二次模拟考试试卷
After traveling through space for seven months, China's Tianwen-1 probe has reached Mars and (success) entered its orbit on Wednesday — bringing it one step (close) to landing on the surface.
Tianwen-1, name means "Quest for Heavenly Truth", consists of an orbiter, lander and a six-wheeled rover. The spacecraft (launch) last July along with two other international Mars missions, is scheduled to land on the planet's surface in May or June. It is tasked with gathering information about Mars' geological structure, atmosphere, environment and soil, as well as (search) for signs of water.
With Tianwen-1, China is the first nation (attempt) to send both an orbiter and a rover on its first homegrown Mars mission. contrast, NASA sent multiple orbiters to Mars before ever attempting a landing, since pulling off the landing is far more difficult task.
The Chinese rover (expect) to function for about three months on the planet. It marks a milestone for China's deep-space (explore) of Mars, according to the CNSA. China is also planning to launch a permanent space station by 2022, and is looking at sending astronauts to the moon-possibly in the 2030s.
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