If you have a cat, you already know that a cat isn’t a dog that doesn’t have to be walked. If you’re about to bring a cat into your family, you need to understand that basic fact. The common wisdom is that dogs are friendlier than casts.

In recent years, scientists who have done DNA studies have offered a better way to understand cats. Unlike other animals that people feed, cats domesticated themselves, and, in a way, trained humans. Cats decided to live close to humans because doing so benefited the casts themselves.

Studies show that cats have lived with humans for about 12,000 years, since people first settled down and started farming. When people started storing grain, mice arrived and started eating the grain. Clever cats figured out that mice settlements where people stored grain were easy for hunting, so they started hanging around. Cats did what they needed to do to get the people to let them stay, but they kept up their independence. Over time, cats allowed humans to get a bit closer to them. Later, the farmers did befriend the cats. Certainly, it didn’t do them any harm because they could see the cats were really helping them out by eating mice.

Today, about a third of American families have cats. In most of those homes, the cats are still more interested in pleasing themselves than in pleasing their human families. A dog may do anything it can to make you happy, but kitty will teach you to make kitty happy.

1.Compared with dogs, cats are______.

A. colder B. friendlier

C. more warm-hearted D. more frightening

2.According to the text, why do cats decide to stay close to humans?

A. To be useful to themselves B. To protect grain from mice

C. To rely on humans for food D. To keep up their independence

3.What may be the best title for the text?

A. A common point between dogs and cats

B. The reasons why people like dogs

C. A disadvantage of raising cats

D. The basic fact about cats.

People have problems

People have to remember passwords for everything, from their email to online banking and internet shopping. 1. A leaked Yahoo database showed that the most popular passwords were still “123456” and “password”.2.

These people are trying to make life easy for themselves. 3. Hackers(黑客) have gotten very good at what they do, with more capable tools than ever, and those tools can work so well because we are still really bad at choosing and remembering passwords.

Researchers from the UK’s Lancaster University, as well as the Peking and Fujian Normal universities in China, tested passwords. 4. They guessed passwords for more than 73 percent of ordinary users, accounts. Hackers could even guess a third of the harder passwords in 100 tries, reported the Daily Mail.

According to researchers from Bloomberg Businessweek, using upper and lower cases(大小写) in your password is a good way to make is safer. Adding numbers and/or symbols to your password can also be of great help. Choose a nine-letter password that includes numbers and/or symbols; this would take a hacker’s computer hundreds of years to break, Also, never use personal information as a password. 5. Experts suggest that a user should change his or her password every 90 days to keep hackers guessing.

A. Passwords were short.

B. Use different passwords for different accounts.

C. A password must be difficult to be guessed by others.

D. Many people used simple combinations of their name, age or birthday.

E. They tried to guess passwords based on people’s personal information.

F. But they are also making it easy for hackers to break into their accounts.

G. So it’s easy to understand why many of us would pick something simple and easy for our passwords.

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