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Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the question. The world needs to do more to prepare for the impact of a rapidly ageing population, the UN has warned - particularly in developing countries. Within 10 years the number of people aged over 60 will pass one billion, a report by the UN Population Fund said. The demographic shift will present huge challenges to countries' welfare, pension and healthcare systems. The UN agency also said more had to be done to tackle "abuse, neglect and violence against older persons". The number of older people worldwide is growing faster than any other age group. The report, Ageing in the 21st Century: A Celebration and a Challenge, estimates that one in nine people around the world are older than 60. The elderly population is expected to swell by 200 million in the next decade to surpass one billion, and reach two billion by 2050. This rising proportion of older people is a consequence of success - improved nutrition, sanitation, healthcare, education and economic well-being are contributing factors, the report says. But the UN and a charity that also contributed to the report, Help Age International, say the ageing population is being widely mismanaged. "In many developing countries with large populations of young people, the challenge is that governments have not put policies and practices in place to support their current older populations or made enough preparations for 2050," the agencies said in a joint statement. (Source: www.ieltsbuddy.com) Which of the following could be the main topic of the passage?

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Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks. A scientist said robots will be more intelligent than humans by 2029. The scientist's name is Ray Kurzweil. He works for Google as Director of Engineering. He is one of the world’s leading experts on (33) ______ intelligence (A.l). Mr Kurzweil believes computers will be able to learn from experiences, just like humans. He also thinks they will be able to tell jokes and stories, and even flirt. Kurzweil‘s 2029 prediction is a lot sooner than many people thought. The scientist said that in 1999, many A.I. experts said it would be hundreds of years (34) ____ a computer was more intelligent than a human. He said that it would not be long before computer (35) ______ is one billion times more powerful than the human brain. Mr Kurzweil joked that many years ago, people thought he was a little crazy for predicting computers would be as intelligent as humans. His thinking has stayed the same but everyone else has changed the way they think. He said: “My views are not radical any more. I've actually stayed (36) ______. It's the rest of the world that's changing its View.” He highlighted examples of high-tech things we use, see or read about every day. These things make us believe that computers have intelligence. He said people think differently now: "Because the public has seen things like Siri (the iPhone’s voice-recognition technology) (37) ______ you talk to a computer, they've seen the Google self-driving cars." (Source: https://breakingnewsenglish.com)

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Lai hai cây cà chua thuần chủng (P) khác biệt nhau về các cặp tính trạng tương phản F1 thu được 100% cây thân cao, hoa đỏ, quả tròn. Cho F1 lai với cây khác, tỉ lệ phân li kiểu hình ở F2 là 4 cây thân cao, hoa đỏ, quả dài: 4 cây thân cao, hoa vàng, quả tròn : 4 cây thân thấp, hoa đỏ, quả dài: 4 cây thân thấp, hoa vàng, quả tròn : 1 cây thân cao, hoa đỏ, quả tròn : 1 cây thân cao, hoa vàng, quả dài: 1 cây thân thấp, hoa đỏ, quả tròn : 1 cây thân thấp, hoa vàng, quả dài. Biết rằng mỗi gen quy định một tính trạng, mọi quá trình sinh học diễn ra bình thường. Các nhận xét nào sau đây là đúng? (1) Khi cho F1 tự thụ phấn thì tỉ lệ kiểu hình thân thấp, hoa vàng, quả dài ở đời con là 0,0025. (2) Cặp tính trạng chiểu cao thân di truyền liên kết với cặp tính trạng màu sắc hoa. (3) Khi cho F1 tự thụ phấn thì tỉ lệ kiểu hình thân thấp, hoa đỏ, quả dài ở F2 là 0,05. (4) Hai cặp gen quy định màu sắc hoa và hình dạng quả di truyền liên kết và có xảy ra hoán vị gen. (5) Cặp gen quy định tính trạng chiều cao di truyền độc lập với hai cặp gen quy định màu sắc hoa và hình dạng quả. (6) Tần số hoán vị gen 20%. Số ý đúng là:

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