Perhaps no other scientist has had a greater impact     1     China’s aerospace science than Qian Xuesen.     2     by the authors of the Story of Qian Xuesen as a man with “great scientific thought and scientific spirit” who was     3     and served his homeland with effort, achievement, and     4    , Qian was an     5     well-respected man.

There is so much more to learn about the interesting history and culture of the United Kingdom. Studying the history of the country will make your visit     1     more enjoyable. The capital city London is a great place to start,     2     it is an ancient port city that has a history     3     all the way back to Roman times. There are countless historic sites to explore, and lots of museums with ancient relics from all over the UK. The UK is a     4     mix of history and modern culture,     5     both new and old traditions. If you keep your eyes open, you will be surprised to find that you can see both its past and its present.

The stores in the Chinatown offer a     1     range of souvenirs, goods, and clothing. All kinds of traditional Chinese herbal medicine can be found, too, and there are Chinese tea stores,     2     visitors can taste and buy     3     of Chinese tea.

But perhaps     4     many tourists and San Franciscans treasure most about Chinatown is its food. There is Chinese food to     5     everyone’s taste, with traditional dishes from all over China.

Chinatowns are     6     important part of the diverse culture of the USA. They allow visitors who have never been to China to experience traditional Chinese culture first hand.

Imagine     1     to sing together with hundreds of people while you are at home alone. You can do this in a virtual choir. Virtual choir members record themselves while they perform alone on video. These videos are    2     the Internet, and then they are put together into one video that you can see online — a virtual choir. Anyone can take part in a virtual choir from anywhere — all you need is a video camera and an Internet connection. You donˈt even need a studio. A virtual choir helps    3     together. Many people do not have    4     who have the same interest in music. Many others do not have the chance to join a local choir. A virtual choir    5     add their voices to those of other individuals and become part of the global community. It has proved to be a     6     the lives of many people.

First of all, there’s the golden rule of the Internet: If you see or read something that makes you feel uncomfortable,     1     immediately. Don’t     2     or click on anything. Second,     3    . Don’t     4     your address or phone number. Someone might use the information to steal your identity. Identity theft is a common and serious problem. Third, be polite. Being online is no excuse for being rude, and you don’t want to     5     for a troll or cyberbully.

There is so much more to learn about the interesting history and culture of the United Kingdom. Studying the history of the country will make your visit     6    . The capital city London is a great place to start, as it is an     7     that has a history dating     8     back to Roman times. There are countless historic sites to explore, and lots of museums with ancient relics from all over the UK. The UK is     9     of history and modern culture, with both new and old traditions. If you     10    , you will be surprised to find that you can see both its past and its present.

In order to save this species from     1    , the Chinese government placed it under national protection. Zhaxi and other     2     watched over the antelopes day and night to keep them safe from     3    . Bridges and gates were     4     to let the antelopes move easily and keep them safe from cars and trains. The measures were     5    .