In a bid to hold a simple，safe and yet splendid Winter Games，the opening ceremony of the Beijing 2022 Winter Olympic Games（1）

was

was

（be） not lengthy or marked with a large-scale performance.The Olympic cauldron （主火炬） at the snowflake- themed ceremony was small，（2）

but

but

the flames conveyed significant messages of greener Olympic Games.
    The use of（3）

advanced

advanced

（advance）technologies such as artificial intelligence，machine vision，5 G and cloud broadcasting added to the novelty of the opening ceremony.The performances，（4）

which

which

carried forward the theme of global peace and shared future for humankind，focused on environmental（5）

protection

protection

（protect），human health and physical fitness.
    To reduce the carbon footprint of the Winter Games，all the Olympic venues were run on clean energy.For example，about 70 percent of the materials （6）

used

used

（use）in the Games were obtained through renting，including new sporting equipment，furniture in the Olympic village，technical devices.Also，the medal platforms（7）

were made

were made

（make） of recyclable and environmentally friendly materials.
    More （8）

importantly

importantly

（important），thrift，a traditional Chinese virtue，can help build a healthy social environment for China to realize（9）

its

its

（it）targets of peaking carbon emissions before 2030 and carbon neutrality before 2060.All this made the 2022 Winter Games（10）

an

an

important Olympics to focus on achieving carbon neutrality.

1．A The Spring Equinox（春分）starts on March 20 and ends on April 3 this year. It signals the equal（1）

（long） of the day and night time. The sun is directly above the equator（2）

the day of the Spring Equinox. After the equinox， the sun moves northwards， （3）

（result） in gradually longer day time in the Northern Hemisphere and longer night in the Southern Hemisphere.
B
My brother was my personal guardian，a friend，and a mentor. Although we were 6 years apart in age，（4）

is considered a large gap between kids，my brother and I often played together. During difficult times， my brother never（5）

（fail） to give me his attention and help. Whenever I had trouble with school work， he would make（6）

（he） available to help. When I was in 5th grade，I couldn't make sense of the music teachings of my teacher. My brother took the time to study music in order to teach me the notes and scales. I was not able to understand anything through my teacher（7）

everything made sense and the logic of music became apparent through my brother.
C China is aiming for comprehensive，systemic reforms in green transformation to achieve carbon neutrality by 2060. To achieve the goals， more effective measures（8）

（take） to strictly control the consumption of fossil fuels. It is also vital to establish a new power system（9）

（center） around new energy to enhance the carbon sink capacity of the ecosystem and popularize the idea among the public. Industrial（10）

（chain），such as new energy vehicles and hydrogen fuel cells， will develop rapidly， and energy-saving products will be highly promoted to the public to reduce the demand for fossil energy.