题型:阅读选择 题类: 难易度:困难
广东省深圳市龙华区教科院2024-2025学年九年级上学期期中考试英语试卷
For centuries, humans have made great efforts to study the Moon. Galileo, the Italian astronomer, noticed the mountains and lands on the Moon with a telescope(望远镜). In 1969, the US Apollo 11 project marked the first time that humans set foot on the satellite. Recently, China' s Chang'e 6 brought back the rocks and soil from the far side of the Moon for the first time in history. You may wonder: what is the value of exploring the Moon?
Many scientists believe that the Moon was made of the rocks and dust from the baby Earth. When the solar system(系统) just formed. a Mars-sized object crashed into the Earth. The force of the crash was so great that it sent materials from the Earth, and from the object that hit it, back into the space. Some of the rocks and dust stuck together and created the Moon.
Those materials on the Moon's surface(表面) have stayed unchanged for over three billion(十亿) years, since it does not have an Earth-like atmosphere. This simple fact makes our Moon a time capsule, which allows scientists to uncover the Earth's past.
It is also about our future. In the last two decades, water was discovered on the Moon. It may help future humans look for drinkable water, breathable air, and rocket fuel outside the Earth. Besides, the Moon is a proper place to test technologies required for deep space exploration, including sending humans to Mars.
Considering the important role that moon exploration plays in scientific research and human future, scientists suggest that human activity on the Moon should avoid bringing harm to its environment.
Do you love sunflowers?This article will walk you through how to plant your sunflower seeds(种子) and care for them. Start it with the best temperatures :18~33℃ Part 1 Germinating (使发芽)Sunflower Seeds ①Choose one kind you like. ②Put the seeds in a plastic bag. Cover the seeds with wet paper napkins. Put them in plastic bags. Once the seeds germinate,plant them. Part 2▲ ①Choose a sunny location. Sunflowers grow best with six to eight hours of sunlight a day. ②Plant the seeds in holes. Plant seeds 2. 5 cm deep and 15 cm apart. Cover the seeds with soil(土壤) after planting. Part 3 Caring for Sunflower Plants ①Water plants weekly. Water plants once a week. ②Fertilize(施肥) a little or not at all. If you are growing sunflowers for your own enjoyment,there is no need to fertilize. ③Harvest(收获)the seeds. Sunflowers usually take 80 to 120 days to mature(成熟) and produce new seeds. Tips: ◆Protect the young plants from pests (害虫). Cover the ground with nets. ◆Support plants over 90 cm with sticks. |
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