Ở một loài thú, tiến hành phép lai P: $♀\frac{\mathrm{AB}}{\mathrm{ab}}{\mathrm{X}}^{\mathrm{D}}{\mathrm{X}}^{\mathrm{d}}\times ♂\frac{\mathrm{AB}}{\mathrm{ab}}{\mathrm{X}}^{\mathrm{D}}\mathrm{Y}$, thu được F₁. Trong tổng số cá thể F₁, có 16,5% số cá thể đực có kiểu hình trội về cả ba tính trạng. Biết mỗi gene quy định một tính trạng, các allele trội hoàn toàn, không xảy ra đột biến nhưng xảy ra hoán vị gene ở cả quá trình phát sinh giao tử đực và giao tử cái với tần số bằng nhau.

Để quan sát lục lạp trong tế bào thực vật, người ta thường sử dụng mẫu vật nào dưới đây?

Read the following passage about climate change and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

           Climate change refers to the long-term alteration of temperature and typical weather patterns in a place. This phenomenon is largely driven by human activities, particularly the burning of fossil fuels such as coal, oil, and gas, which increase the concentration of greenhouse gases in the atmosphere. They trap heat from the sun, leading to global warming and causing severe weather events, such as hurricanes, floods, and droughts, to become more frequent and intense. Climate change impacts nearly every region of the world and affects the natural environment, economies, and human health.

           As temperatures rise, polar ice caps and glaciers are melting at alarming rates, contributing to rising sea levels. Coastal regions face an increased risk of flooding, and many low-lying islands are at risk of disappearing entirely. Additionally, higher temperatures lead to the warming of oceans, affecting marine ecosystems and causing coral bleaching, which threatens biodiversity and the livelihoods of millions of people who depend on fishing.

            [I] The consequences of climate change are not just environmental; they also affect human society in significant ways. [II] Changes in weather patterns disrupt agriculture, leading to crop failures and food shortages in vulnerable regions. [III] Furthermore, climate change is linked to health issues such as respiratory diseases, heat strokes, and the spread of diseases carried by insects, like malaria and dengue fever. [IV]

           To combat climate change, a coordinated global effort is necessary. Governments, organizations, and individuals all have roles to play in reducing greenhouse gas emissions and promoting sustainable practices. Shifting to renewable energy sources, such as wind, solar, and hydropower, is essential. Additionally, conserving forests and investing in technology that captures carbon dioxide from the atmosphere can help mitigate the effects of climate change and pave the way for a healthier planet.

The phrase "pave the way for" in paragraph 4 could best be replaced by ________.

Năm 1941, Nguyễn Ái Quốc có hoạt động nào sau đây?

Cho hàm số \(y={{x}^{3}}-3x+1.\) Tìm \(\text{d}y\)

Chủ thể nào dưới đây đang tiến hành hoạt động sản xuất?

Khi xây dựng vương triều mới, vua Quang Trung giữ mối quan hệ như thế nào đối với nhà Thanh? 

Các chủ thể tiêu dùng cần phải có những trách nhiệm gì khi tham gia vào hoạt động kinh tế?

Đâu là yêu cầu về thẩm mĩ đối với sản phẩm là gì?

Mọi hành vi vi phạm quyền tự do tín ngưỡng, tôn giáo đều sẽ:

Read the following leaflet and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 35 to 40.

How to Live Your Life Actively?

If you are not naturally sporty, and finding ways to fit more activity into your daily life, here are several tips to help you make a routine (35) ____________ being active:

Select a realistic exercise plan.

Track your progress using a health app (36) ____________ a paper checklist.

Take every opportunity to do such strength-building activities as carrying (37) ____________ and climbing the stairs.

Invite friends and (38) ____________ family members to join in, and try (39) ____________ everyone's competitive side with challenges like seeing who can do the most steps or cover the most distance in a day.

Reward yourself with a treat like a favourite TV show if your plan works (40) ____________ to maintain your motivation.

(Adapted from https://www.nhs.uk)

Choose the best answer for number 40:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 20 to 27.

Traditional Media

Before the invention of newspapers, the main source of news was word of mouth. Any writings and drawings were done by hand. Although printing presses had existed in eastern Asia, it was Gutenberg’s invention in Europe in 1453 that made printing faster and books more accessible. It reduced the cost and size of printed books and made them the first form of mass media affordable to less wealthy people. Gutenberg’s invention also quickened the spread of discoveries and information, and promoted literacy in Europe.

The printing press led to the rise of printed newspapers that appeared regularly. The first newspapers developed from around 1612 and in a short period of time, they became very popular in Europe and the European colonies. In the 19th century, they also appeared in Asia.

Newspapers and magazines are still very popular today. Although most of them have online versions, many people continue to read print media, which is considered more credible than digital media.

In the 1920s, when radio, television, and video were introduced, the phrase “the media” began to be used. Black and white television quickly became popular in the 1950s, and in the 1960s colour broadcasts started in many countries. Thanks to its audiovisual presentation, television became one of the most important forms of mass media in the 20th century. As a source of news, entertainment, and education, it still attracts a large number of viewers today.

(Adapted from English Workbook 12 – Global Success)

The word promoted in paragraph 1 can be best replaced by .

Trong dao động điều hoà, vận tốc biến đổi điều hoà

Công nghệ nào sau đây được phân loại theo lĩnh vực kĩ thuật?

Sản phẩm quang hợp đầu tiên của nhóm thực vật C₄ là gì?

Việc các nhà phân phối hàng hóa mua, trữ hàng và bán lại cho các đại lí hoặc nhà bán lẻ giúp lưu thông hàng hóa hiệu quả thể hiện đặc điểm của chủ thể nào trong nền kinh tế?