While deserts are famous for being especially hot during the day, they can get surprisingly cold at night! Do you know why this would h    1    ?

Sand is quite an interesting matter. When the sun heats (加热、热量) the sand in deserts, the sand won’t take the heat.     2    , it acts like a mirror and heats the air above the ground.

Other kinds of terrain (地形),     3     as forests, beaches and mountains, are not as hot as deserts. That’s b    4     they don’t radiate (辐射) all the heat to the air above the ground, but deserts do.

Now you understand the hotness of deserts     5     the daytime. But what about the coldness at night?

As you may know, water is good at catching and     6     heat. In deserts, however, the situation is quite different.

The air in deserts is really dry, which means that there’s     7     water in the air. When the sun goes down, the ground will lose its heat. And the air above the ground cannot catch or save the heat because there’s not much water. This is why the heat loses so quickly that the     8     drops at night in a short time.

Kevin is a university student. Last summer vacation, he took a trip to Yunnan because Yunnan was one of the most beautiful     1     in China. Kevin went there with his best friend Ken.

First, they took the train in Guangzhou South Railway Station.     2     took them 9 hours to get to Kunming. Kevin liked the     3     in Kunming because it was cool and sunny. They visited many places of interest in Kunming. Three days later, they took a bus to Dali. Dali was a quiet and green city. They lived near Erhai Lake. In the daytime, they     4     bikes around the lake. At night, they watched stars in the sky. They had     5     relaxing time there. Then, they went to their last destination—Lijiang City. Lijiang was one of the oldest cities in China,     6     now it was very modern and crowded. They looked     7     the most popular online Yunnan rice noodles. They said they were the most     8     food in the world. They took a lot of photos and made some friends. Yunnan was a good place to     9     fun, so they would like to go there again.     10    , they took a plane back home.

How was your National Day holiday? I had an e    1     holiday. As you know, we had seven days off this year, so traveling was my family’s best c    2    . My family went to Xi’an. The journey went well except an a    3     because the driver was so c    4    . The next day, we went to Shaanxi History Museum. Because of COVID-19, many people stayed at home so the museum was not so c    5     as before. It was really great!

【推荐3】Yesterday Maria and her classmates had a good time in Central Park. It was a     1     (sun) day. They met at school at nine o’clock in the morning. Everybody felt very     2     (excite). On the way     3     (介词) the park, they talked and sang     4     (happy) on the bus.

They arrived at the park half an hour     5     (late). There were many people in the park. Some old people     6     (take) a walk and some children were flying kites. And then they were tired. Linda suggested     7     (连词) they should talk about     8     (they) own hobbies. Maria was from Brazil and she couldn’t speak Chinese well. So she     9     (feel) very nervous when it was her turn to talk. But her classmates all encouraged     10     (she). Finally she did a good job.

【推荐1】

Have you ever been to Zibo, a small city in Shandong province? Zibo is now a popular place for tourists around China. Every day,     1    （thousand）of tourists come to Zibo to enjoy a special delicious food—Zibo barbecue（烧烤）. Zibo barbecue has     2    （bring）more than 5 million tourists since February. You can see many people     3    （eat）and listening to music happily outside. In Zibo, you can spend less but enjoy more. That’s what everyone is looking for, right? Actually the     4    （good）time to visit Zibo is from April to October. The local government wants to encourage more people     5    （come）to the city. They have to make good preparation for the coming days.