Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
As computer use becomes more common, the need for security is more important than ever. One of the greatest security threats in the online world is computer hacking. Computer hacking is the unauthorized access to a computer or network of computers. Hackers are people who illegally enter systems. They may alter or delete information, steal private information, or spread viruses that can damage or destroy files. But how exactly can a hacker get into a system to do these things?
Most hackers use information called protocols that are built into computer software. These protocols allow computers to interact with one another. Protocols are sort of like computer police officers. When a computer connects to another system, the protocols check to see if the access is valid. The protocols can also determine how much information can be shared between the two systems. Hackers can manipulate the protocols to get unlimited access to a computer system.
In fact, just the act of entering a computer network is considered hacking. This is commonly called passive hacking. Passive hackers get a rush from just being able to access a challenging system like a bank or military network. Another kind of hacker tries to do damage to a system. After hacking into systems, these hackers release viruses or alter, delete, or take information. Known as active hackers, they are, by far, the more dangerous of the two.
The easiest way to protect a system is with a good password, Long and unusual passwords are harder for hackers to guess. For even greater security, some online services now use “password-plus” systems. In this case, users first put in a password and then put in a second code that changes after the user accesses the site. Users either have special cards or devices that show them the new code to use the next time. Even if a hacker steals the password, they won't have the code. Or if the hacker somehow gets the code, they still don't know the password.
Which of the following could best describe the main idea of the passage?
A. Computer security and hackers.
B. Different types of hackers.
C. What a hacker can damage in your computer.
D. The way hackers access to a computer.
Giải bởi qa.haylamdo.com
Đáp án A
Câu nào trong các câu sau mô tả hợp lý nhất ý chính của đoạn văn?
A. Bảo mật máy tính và tin tặc
B. Các loại tin tặc khác nhau.
C. Những điều mà một tin tặc có thể gây hại cho máy tính của bạn.
D. Cách mà tin tặc đột nhập vào 1 hệ thống máy tính.
Căn cứ thông tin đoạn 1:
“As computer use becomes more common, the need for security is more important than ever. One of the greatest security threats in the online world is computer hacking.” (Khi việc sử dụng máy tính dần trở nên phổ biến thì nhu cầu bảo mật lại quan trọng hơn bao giờ hết. Một trong những mối đe dọa nguy hiểm nhất với thế giới mạng là nạn tin tặc đột nhập vào máy tính.)
People often use the natural world as inspiration to design and invent new ______.
Read the following passage and mark the letter A, B, C, or II to indicate the answer to each of the question.
As Hurricane Florence zeroes in on the southeastern US, scientists are warning that climate change is exacerbating the effect of tropical storms. The powerful Category 4 Atlantic weather-front is slow moving, an increasingly common phenomenon that poses a different manner of threat to states in its path. In the event that Florence stalls or comes to a halt altogether over land, it has the potential to deposit catastrophic quantities of rainwater, posing a risk of severe flash flooding.
While the high winds and waves generated by faster storms moving inland from the ocean pose a significant danger to human life and property, the effect of heavy rain can be just as devastating, if not more so. When Hurricane Harvey hit in August 2017, it dropped 60 inches of rain over Houston, Texas, flooding the streets, leaving 93 dead and hundreds more having to be rescued by boat, causing millions of dollars-worth of damage.
James Kossin of the National Oceanic and Atmospheric Administration published a study in the journal Nature in June suggesting that slow-moving tropical cyclones, which would include those like Florence and Harvey, have become more common over the last 70 years, dropping in speed by 10 per cent in that time. According to Mr Kossin, global warming as a result of man-made air pollution is causing the poles to become warmer, which in turn reduces the difference in temperature between the Arctic and Antarctic and the equator, altering atmospheric pressure and slowing down the whipping currents of wind that pass between them and drive hurricanes.
The best title for this passage could be _______________.
I don't like networking events - spending hours trying to ______ small talk with strangers just isn't my cup of tea.
Mark the letter A, B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
The best hope of avoiding downmarket tabloid TV future lies in the pressure currently being put on the networks to clean up their act.
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each the numbered blanks.
The idea of going overseas to study can be daunting, with visions of baffling languages or nights spent in isolation while you are gradually forgotten by your friends and family. (25) ______ the benefits of studying abroad - such as broadening your mind, improving your career prospects and making friends from all over the world - can make digging out your passport really rewarding.
“Studying abroad is an eye-opening experience,” says Anna Boyd, event manager at The Student World. “Being (26) ______ in another culture, understanding differences and spotting similarities, living on a beach or in the mountains, (27) ______ will have an impact on every student.”
Overseas study comes in many shapes and sizes. It might be a single semester abroad via an Erasmus programme, for example. Or you might elect to follow a full three-or four-year degree programme. Whatever your ambition, the key is starting early. Some countries require specific combinations of A-levels from UK students, Germany looks for four A-levels including maths or science and one modern foreign language, for instance, while others, such as the US, value extracurricular activities. Starting our research well ahead (28) ______time can help you make the right choices. "Getting involved in sports, arts and music is also worth considering, as well as gaining experience through volunteering and work placements," says Boyd. In fact, applying to study abroad could even work to your advantage , for example, you might encounter lower (29) ______ requirements.
Điền vào số (25)
In many countries, divorces ______ to rise because of long-standing conflicts.
I have visited ______ Portugal but I have never been to ______ Netherlands.
In the U.S, children can choose their own partners even if their parents object ______ their choice.
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
More research is needed to find out if acupuncture is helped with other side effects such as pain, anxiety or shortness of breath.
Mark the letter A, B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
Teenagers can become addicted to social networking if they can't control they spend online.
Southern Spain's Costa del Sol, ______ from Nerja in the east to Manilva in the west, is one of the most fascinating tourist areas in the world.
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
ASEAN aims at promoting economic growth, regional peace as well as provide opportunities for its members.
Stranger: “Could you show me how to get to the nearest train station from here?”
Lan: “_____________.”
