Six months ago, 19-year-old Xie Lei said     1     to her family and friends and boarded a     2     for London. It was the first time     3     she had left China. “I was very excited but also quite     4    . I didn’t know what to expect,” Xie Lei     5    .

With the development of society, chemical pesticides and artificial fertilisers have been in     1     use in farming for many years. They can help fight crop     2     and increase production. However, they can cause many problems     3    . For instance, pesticides can kill     4     bacteria and insects and crops grown with chemical fertilisers usually grow     5     to be full of nutrition. As a result, many people worry they may make them ill and even cause cancer.

To tackle this problem, farmers use natural waste as     6     and they often change the kind of crop grown in each field every year and they also plant diverse crops that use different     7     of soil to help keep it rich. But organic farming is nowhere near able to     8     the high demand for food. Therefore, there is still a long way to find a     9     solution that puts sufficient food on the dinner table while keeping people and the environment as     10     as possible.

Six months ago, 19-year-old Xie Lei said goodbye to her family and friends and     1     a plane for London. It was the first time that she had left China. “I was very     2     but also quite     3    . I didn’t know what to expect,”Xie Lei     4    .

Xie Lei is studying for a business     5     at a university in China and has come to our university on a year-long     6     programme.“I     7     the exchange programme because I wanted to learn about     8     business and improve my English. My     9     is to set up a business in China after     10    ,”she explained.

Countries around the globe are spending billions of dollars and lots of time on various space missions, whether to Mars     1    .     2     we should stop wasting time and money exploring space. Instead, we should feed the world’s poor and     3    , such as pollution and fatal diseases. However,     4     which fails to     5    .

Tu Youyou has become     1     of the PRC to receive a Nobel Prize，    2     to the fight against malaria，one of     3     in human history.     4     of qinhaosu，malaria patients all over the world now have had a greatly     5     of survival.

Born in 1930，in Ningbo，Zhejiang Province，Tu studied medicine at university in Beijing between 1951 and 1955.     6    ，she worked at the Academy of Traditional Chinese Medicine. She completed further training courses in traditional Chinese medicine，    7     of both traditional Chinese medicine and Western medicine.

Though Lin Qiaozhi never married, she was known as the “mother of ten thousand babies”,     1     50,000 babies in her lifetime. Dr Lin did not retire until the day she died, 22 April 1983. Since she had no children of her own, she     2     and a fund for new doctor. And     3    , her final thoughts were for others ......

Historically, Chinese immigrants settled in the area during the     4    . What     5     for Chinese immigrants then turned into a centre for Chinese culture ......