I am certain that I will    .

He     by the king.

A wise man was on his long journey with a young man. In the evening, they found1 small old house. A poor family lived in it. After the meal, the wise man asked how they made a living in such a poor place. In a low voice the husband replied, "We have a cow. We2her for five years. We sell her milk to our neighbours and keep some3our own needs — make some cheese and cream."

The next morning, the two visitors continued 4 journey. After they walked a few miles, the wise man told the young man5 back and kill the cow. “If they still keep the cow, they will 6be rich” the wise man said. The young man was 7 about the future of the family.8 finally he returned to the old house and did as the wise man told him.

A few years ago, the young man 9 travelled on the same road decided to visit the family. To his10, he saw a large house with a beautiful garden there.

He knocked on the door and a well-dressed man answered it. The man told him11 his family's life changed. “You know, we had 12 but a cow to keep us alive years ago. But one day she13. We had to come up with new ways of 14a living. You see, we are 15 than before.” At his words, the young man smiled.

Being street smart is an important skill to have and a good way to take care of yourself.

Always carry your phone with you, but do not look at1while yon are walking. Be able to communicate or call for help is important, so keep a list of useful numbers. But put your phone away while you are walking so that you can keep your2up see what's going on around. If you do need to check your phones,3and look at it quickly.

Don't wear earphones4you are out. If you have to5something when you're out, use only one earphone or play it at a very low volumn (音量).

Travel with6or family members when possible and never go anywhere with a stranger. It's7to be careful with strangers. Remember not to get into a stranger's car if they call you over.

8dark and out-of-the-way places. Do not take a short cuts through dark areas, even if it will make your trip much faster. If you have to go to unsafe places, go9someone you know or speak to someone over the phone while you are there.

Run and shout if you feel unsafe. Run away as fast as you can towards a police station, hospital, on nearby business for10. Shout as loudly as you can to get the attention of people nearby.

It was a touching moment at the National Zoo in Washington, US: tens of thousands of people from all over the country, and even the world, came to say goodbye to one of the area's most popular residents (居民), BaoBao—a 3-year-old panda.

BaoBao left for her new home in Chengdu, China on Feb 22. She's the first female panda born in the US and has won the hearts of many Americans. A number of goodbye events were held, including a dumpling party and cake feedings. Information about her flight was even made available online so that people could keep learning about her journey.

It had been decided that BaoBao must return to China according to an agreement between China and the US. In fact, most pandas around the world are borrowed from China and baby pandas born abroad will be sent back before they're four.

Being native to China and loved around the world, the cute black-and-white animals have played an important role in the country's diplomacy (外交). This is known as "Panda Diplomacy". Animal diplomacy dates back to the Tang Dynasty (唐朝), when Empress Wu Zetian sent a pair of pandas to the Japanese emperor. China restarted panda diplomacy in the 1950s when China sent two pandas to the Moscow Zoo. By 1982, China had given 23 pandas to nine different countries. The most famous was China's gift of two pandas, Ling-Ling and Xing-Xing, to the US in 1972 after President Richard Nixon's visit to China.

However, since early 1980s, China has stopped giving away pandas for free because their number is becoming smaller. For example, zoos in the US, UK and France "rent" pandas from China. The money they pay for the pandas, which are from tens of thousands to millions of US dollars, was used to protect and breed (繁育) the endangered animals.

Besides pandas, elephants and dogs have also been given as diplomatic gifts. In 1953, Vietnamese leader Ho Chi Minh sent Chairman Mao Zedong two Asian elephants as gifts as a symbol of the friendship between the two countries.

Doing experiments can be interesting, and you may try the following experiments at home. Make sure that you'll do them with an adult.