There is an unusual holiday in the US that falls on the fourth Thursday of April every year.

It is very     21     Christmas, Thanksgiving, or other well-known holidays. It is called Take Our Daughters and Sons to Work Day. This holiday is meant to be     22     as well as fun. The idea is simple, and the name says it all. It is a day for working parents to show their kids what they do all day.

Although this holiday doesn’t seem very complex(复杂的), it has meaningful     23    . There are many good reasons why a child should know what his or her parents do at work. For one thing, it is hard for children to understand the life of an adult when all they know is school. Therefore, this holiday helps children learn what it means to have a job. It also helps them learn about the differences and similarities between their world and the grown-up world. When young people know more about their parents’ lives, they can     24     stronger parent-child relationships. This alone is worth a day of celebration.

An English traveler found himself in Norway with only enough money to buy the ticket for him to go back home. As he knew that it would take him only two days to get to England, he decided that he could easily spend the time     25     food. So he bought a ticket and got on the ship. The man closed his ears to the sound of the lunch bell. When dinnertime came, he didn’t go to dinning room, saying that he was not feeling very well.

The next morning he still didn’t have breakfast and at lunchtime he     26     stayed in his room. But at dinnertime he was so hungry that he went to the dinning room and ate everything the waiter put     27     him. He got ready for the quarrel.

“Bring me the bill,” he said. “The bill, sir?” said the waiter in surprise. “There isn’t any bill. On our ship meals are     28     in the money for the ticket.”

There is no way that you cannot have any embarrassing moments. You can’t control everything that happens, so you’re going to be in an embarrassing situation one day. So how can you solve this problem? The answer is to ________ your actions and try not to get upset.

◆Remember that you’ll probably laugh about it in a few days, so try to see the ________ side of it right away.

◆If it is something so embarrassing that you feel you will ________ laugh about it, please remember that the pain will be over after some time.

◆Ask your friends to give you a break and not to make fun of you. If you’ve done the same for them, they’re more likely to agree to give you a break.

Always remember that you are not ________. Everyone has embarrassing moments. While you are sure that everyone is going to remember this moment forever, the _______ is that they’ll probably forget it very soon. Most of us remember the moments in which we feel embarrassed, but very few of us remember other people’s embarrassing moments.

Most people have short memories. So while you may never forget the moment when your skirt was torn in gym class, most of the other people probably forget it at once. ________ a short memory may not be a good thing when you are trying to remember facts in a history test, it is useful when you are trying to forget life’s most embarrassing moments.

Soap is everywhere. We use it every day and it plays an important role in our lives. It also has an amazing history. The e    56     known soap was used in Babylon around 2800BC. Ancient Egyptians also made soap. At one time, soap-making was very dangerous. That is because lye(碱液), which was used in the process could cause chemical burns or even make people blind. Other dangerous m    57     were also mixed with animal fats and oils. Later, soap became a    58     in stores and people gradually s    59     making it in their homes.

Originally, soap was not m    60     used for cleaning. Instead, it was used as gel(凝胶) for making hair stay in place or smell good. The Arabs first made the soap that we know today. They c    61     coloured, liquid, and hard soaps. They even had soaps which were used for shaving.

Soap became popular in the late 1800s. Advertising in Europe and the US helped people understand the connection between cleanliness and good h    62    . Now, soap is something we wouldn’t want to live without.

A major development to self-driving cars may change the way we will drive in the future. Google, the leading company in self-driving technology, has changed its development plan. It had driverless cars built by car factories, but now will start building its own cars.

Google has started to build some kinds of experimental electric self- driving cars that look like a Smart car or Fiat 500. There is no steering wheel (方向盘)，gas pedal (油门) or brake (刹车). The only thing a human passenger controls is a red “e-stop” button for fear stops and a start button. The car’s only “friendly” face is designed to make it help people accept self-driving technology.

Google workers took part in a long experiment, in which they used self-driving cars for their usual travel to work. No accident happened, but Google’s heads realized that depending on a human passenger to drive in an emergency wouldn’t work because they may be reading, working, or sleeping. Now the self-driving car drives by itself if the driver takes his hands off the wheel for over ten seconds.

Google’s self-driving cars are now limited to a speed of 25 miles per hour for safety reasons. The cars aren’t allowed to drive on highways. However, a Google engineer said that once the cars are solved to run safely, we can drive at the speed of 50, even 80 miles an hour.

Google recently announced that its cars had covered 700,000 miles of public roads, and they were now running in busy city streets. People who love self-driving cars say this will improve transport by making roads safer, cutting down accident, and making less pollution.

Clubs are calling