Đề ôn thi Đề thi vào lớp 10 Hà Tĩnh môn Tiếng Anh - Mã đề HTI-29

Bats are fascinating nocturnal mammals. For a long time, people (24) __________ how these animals could fly so skillfully in complete darkness. The secret is an amazing ability called echolocation, (25) __________ is a kind of natural sonar. To use it, a bat produces high-frequency sounds that are too high for humans to hear. This system is incredibly effective and precise for navigating and finding food.

The process works in a clear sequence. First, the bat (26) __________ a series of short, loud clicks. These sound waves travel outwards until they hit something, like an insect or a tree. Then, the waves bounce back as echoes. The bat's large, sensitive ears collect these returning echoes. The information from the echoes (27) __________ by the bat’s brain to build a detailed 'sound map' of its surroundings.

By analyzing the echoes, a bat can determine an object's size, shape, and distance. (28) __________, this adaptation means they can 'see' using sound. This is essential for their survival, allowing them to hunt for insects at night and avoid dangerous (29) __________ in their path.

The motorbike trip in Vietnam is more than just a way to get from one place to another; it's an adventure woven into the country's culture. For many young Vietnamese, who grow up with the sound of engines, it represents a rite of passage. As they near the age of getting a license, the dream of exploring their homeland on two wheels symbolizes a profound sense of freedom and independence, similar to the classic road trips seen in movies.

The rewards of such a journey are immense. Riders experience a direct connection with the environment, feeling the wind and smelling the mountain air. Routes like the famous Ha Giang Loop offer breathtaking landscapes, with winding roads through limestone mountains and terraced rice fields. This travel style also allows for spontaneous stops in small villages, providing authentic interactions with local people that are often missed by tourists on buses.

However, embarking on a motorbike loop is not without its difficulties. The weather can be unpredictable, changing from bright sunshine to heavy rain in minutes. Road conditions can be challenging, with narrow, steep, and sometimes damaged sections. Therefore, careful preparation is essential. This includes checking the bike's mechanics thoroughly, planning the route to avoid dangerous areas, and packing appropriate gear for all weather conditions.

Ultimately, while a motorbike trip demands respect for the risks involved, the experience is often described as life-changing. The combination of stunning nature, cultural discovery, and personal achievement creates memories that last a lifetime. For those willing to prepare properly—wearing a good helmet, choosing a reliable bike, and traveling with awareness—the open road in Vietnam offers one of the most rewarding adventures imaginable.