Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHXH môn Tiếng Anh - Mã đề KHXH-28

The famous deep blue color of denim jeans is one of (35) __________ most iconic shades in fashion. This unique color does not come from just any dye; it is the result of a traditional process using a special natural substance. This process gives blue jeans their signature look, which is recognized and loved all over the world.

The special (36) __________ used to color the cotton threads for denim is called indigo. Indigo is a natural pigment that comes from the leaves of the Indigofera plant. It is unique because, unlike many other dyes, it does not dissolve in water; (37) __________, it requires a special chemical process to be applied to fabric. This process has been used for centuries to create the rich blue color.

The dyeing process involves (38) __________ bundles of cotton yarn into large vats filled with a prepared indigo solution. When the yarn is first pulled out, it is not blue but a yellowish-green color. The color does not immediately (39) __________ the fibers. The real transformation happens next, in a step that seems like magic but is actually simple science.

This magical change is due to a process called oxidation. A chemist explained that (40) __________ blue when it reacted with oxygen in the air. As the wet, yellow-green yarn is exposed to the air, the indigo molecules on the fibers oxidize and gradually turn into the deep blue we all know. This method is simple but effective; it really (41) __________.

Finally, the now-blue yarn is woven to create denim fabric. An interesting characteristic of indigo is that it fades over time, which gives each pair of jeans a unique, personal look. If denim (42) __________ with a different type of dye, it would not achieve this famous fading quality that so many people appreciate.

Every day, teenagers across Vietnam and the world share their lives on social media platforms like Facebook, Instagram, and TikTok. From photos of a fun day out with friends to comments on a trending video, these online actions seem temporary. However, each one contributes to a 'digital footprint'—a permanent and public record of your online activity. This digital trail is more significant than you might think, as it can have long-lasting consequences for your future academic and professional life.

In the past, a resume and a good interview were all you needed. Today, the landscape has changed dramatically. Universities and potential employers are increasingly turning to the internet as a screening tool. In Vietnam, for example, major tech companies like FPT and Viettel are known to review a candidate's social media presence before making a hiring decision. They do this because your online profile can offer insights into your character, professionalism, and judgment that a traditional application cannot, making it a critical part of assessing your suitability for a role or a university place.

So, what exactly are recruiters and admissions officers looking for when they scan your profiles? It's not always about finding negative content. They are often searching for positive signs: evidence of maturity, creativity, a passion for a particular field, or involvement in community service. On the other hand, they are also vigilant for red flags. These can include unprofessional or inappropriate photos, discriminatory comments about race or gender, complaints about previous teachers or employers, or signs of poor judgment. For them, a candidate’s online persona is a window into their real-world character.

Fortunately, managing your digital footprint is a skill you can learn. A simple rule to follow is the 'Grandmother Test': if you wouldn't want your grandmother to see it, don't post it. It's also wise to regularly review your old posts and privacy settings. You can often untag yourself from unflattering photos or delete thoughtless comments from years ago. More importantly, you can proactively build a positive online presence. Consider creating a LinkedIn profile to showcase your academic achievements and skills, or use social media to share articles about your interests and volunteer work. This shows initiative and responsibility.

Ultimately, your digital footprint is an extension of your identity. It’s not about creating a fake or perfect online version of yourself, but about being mindful and responsible. By curating a positive and professional online image, you are not just protecting yourself from future embarrassment; you are strategically investing in your future success. In the 21st century, managing your digital identity is as crucial as any subject you learn in school.