Đề ôn thi Đề thi vào lớp 10 Phú Thọ môn Tiếng Anh - Mã đề PTH-153

A USB flash drive, often called a thumb drive, is a small, portable data storage device. Its main purpose is to save and transfer files between computers. If computers didn't have USB ports, sharing files (15) __________ much more difficult. Inside its plastic or metal case, a flash drive consists (16) __________ a small printed circuit board with flash memory. This technology allows the drive to hold data electronically without needing an external power source.

Today, these gadgets can hold a huge amount of information, from documents to videos. (17) __________, it's important to use them correctly. You should always “eject” the drive from your computer's operating system before physically removing it. This simple step helps to (18) __________ that all data transfers are complete and prevents file corruption. If you fail to do this, you might have to (19) __________ the problem of lost or damaged files. Almost (20) __________ modern computer and many other devices, like smart TVs and printers, have USB ports, making these drives incredibly versatile.

Across Vietnam's busy cities, from the crowded alleys of Hanoi to the wide boulevards of Ho Chi Minh City, a new sound is emerging—or rather, a lack of it. The quiet hum of electric motorbikes is steadily replacing the roar of traditional gasoline engines. Promoted by companies like VinFast, these e-motorbikes are presented as a modern, green solution to urban transportation challenges, especially popular among students and young professionals.

The most obvious advantage of e-motorbikes is their contribution to cleaner air. They produce zero tailpipe emissions, which means a significant reduction in the pollutants that cause urban smog and respiratory problems. This is a crucial benefit for densely populated cities. Furthermore, their quiet operation helps to decrease the constant noise pollution that characterizes many urban environments, creating a more peaceful atmosphere for residents.

However, the 'green' label of e-motorbikes is more complicated than it appears. The electricity used to charge them must come from somewhere, and if that power is generated by burning coal or other fossil fuels, the environmental benefit is reduced. Moreover, the production of lithium-ion batteries is energy-intensive, and their eventual disposal raises serious environmental concerns if not managed responsibly. These batteries contain materials that can be harmful to the ecosystem.

In conclusion, while electric motorbikes are a positive step towards reducing direct air and noise pollution on city streets, they are not a complete solution on their own. Achieving a truly sustainable transportation future in Vietnam will depend not only on adopting cleaner vehicles but also on developing greener sources of energy to power them. The journey to a clean future is complex, requiring changes on multiple fronts.