Đề ôn thi Đề thi vào lớp 10 Hải Phòng môn Tiếng Anh - Mã đề HPG-152

The journey of digital photography began in 1975 with an engineer at Kodak named Steven Sasson. His invention was huge, weighing nearly 4kg, and took 23 seconds to capture one image. For many years, film cameras remained dominant. It took a long time for digital technology to really (29) __________, as early models were expensive and lacked quality.

Companies started releasing more accessible cameras (30) __________ the 1990s. (31) __________, the market for traditional film began to shrink. The main (32) __________ of this shift was that photography became instant. People could see their photos immediately without waiting for film to be developed. Think about it: if we still used film today, sharing photos on social media (33) __________ much more difficult. Today, almost (34) __________ new smartphone includes a powerful digital camera, making photography a part of daily life for millions of people.

When you enjoy a meal, you probably think about the ingredients, but not the ground they came from. Soil is a vital resource, yet we often overlook its health. Soil degradation, which is the decline in soil quality, is a serious environmental problem affecting the entire planet. This 'invisible' issue directly threatens our ability to grow food, making it a critical concern for global food security and the future of farming everywhere, including in Vietnam.

The causes of soil degradation can be divided into two main categories. There are natural causes, such as erosion from strong winds and heavy rain, which slowly wear away the topsoil. However, human activities are often a much bigger problem. Actions like deforestation (cutting down forests) and intensive farming, where the same crop is grown repeatedly without giving the soil time to recover, significantly accelerate the damage to this precious resource.

In Vietnam, especially in agricultural regions like the Central Highlands, the effects of human activity are clear. The improper use of chemical fertilizers for valuable cash crops like coffee is a major contributor to soil degradation. While these chemicals can boost production in the short term, their overuse makes the soil acidic and less fertile over time. This reduces its ability to support healthy plant growth, creating a long-term problem for local farmers and the nation's agricultural output.

Fortunately, it is not too late to act. Farmers and governments are working on solutions to protect and restore soil health. Sustainable farming methods, such as crop rotation (planting different crops in sequence) and using organic fertilizers instead of chemical ones, can help rebuild soil quality. Initiatives from Vietnam's Ministry of Agriculture and Rural Development also aim to promote these better practices. Protecting the soil is essential for ensuring we can feed future generations.