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Counting down their 180-day stay in China’s space home, the Shenzhou-13 taikonauts (中国航天员) are _____ for coming back after having lived in the Tianhe space station for more than five months.

The _____ conditions（情况）of the three crew members are better than expected, and they are planning to return to Earth _____ April.

They have to put all equipment (设备) in place _____ there will be a gap of more than one month before Shenzhou XIV enters the space station.

To ensure their safe and _____ return, the taikonauts have been doing physical

_____ to train their muscles. Meanwhile, the ground support team has evaluated (评估) their physical conditions, and made some changes for them.

Medical service teams for rescuing (营救) taikonauts will receive training _____ the return, such as how to land by using a helicopter (直升机) and how to keep returned taikonauts _____ in April when the northern part of China is still pretty cold.

Before going home, the crew members need to pack their belongings, _____ fitness equipment, laboratory supplies and maintenance parts (维修物品). Some items may need to be fixed (被固定) to the _____ to avoid (避免) flying around and slipping away

If you look at the top of your phone, you’ll usually see a little symbol that says 3G or 4G. The “G” stands for the “generation” of your mobile network. But these symbols will become things of the past after 5G networks fully arrive.

On March 30th, 2019, Shanghai vice-mayor (副市长) Wu Qing made the first 5G video call on a Huawei Mate X smart phone, CGTN reported. Shanghai has also become the first city in China to start testing 5G metworks.

About 100 times faster than 4G networks. 5G will let people download and upload data faster than ever before. But 5G won’t just bring faster mobile Internet. People can use it for many other things as well.

For example, 5G will help to make self-driving cars safer. Today’s self-driving test cars have one problem lag. When the car “sees” an obstacle (障碍物), it sends the information to a data center and receives instructions. However, it takes time to send and receive information. With this kind of lag, the cars might crash because they don’t receive instructions in time. With 5G, this lag will be great lowered, making the cars safer, according to CNN.

5G could also be used to power the Internet of Things (IoT 物联网). This refers to a large online network that connects all things and people. Fast Internet speeds will be the key to develop this technology.

The IoT could be used in a lot of ways. For example, with IoT, your refrigerator could automatically (自动地) place an order online for eggs when it finds that there are no eggs left inside. What happened to the swallow at last?

Many years _____ Shanghai was a _____ town. Only a _____ thousand people there. Many of them _____ fishermen and farmers. Today, Shanghai is a big and modern _____. It is an important financial center (金融中心) in the world. There are tall _____ everywhere. More than twenty million (百万) people _____ here. These people do many _____ jobs.

The Shanghai History Museum is one of the famous scenic spots. It _____ how Shanghai changes from a fishing village into a metropolis (大都市). There you can see _____ things from old Shanghai.