Tu Youyou, whose research led to the discovery of artemisinin, a crucial new treatment for malaria, was     1    Nobel Prize for Physiology or Medicine. The discovery was extremely difficult. In their research, she and her team examined over 2000 old medical texts, and     2     280000 plants for their medical     3    . They     4     different methods to draw out the extract from the wormwood. First they tested a collection of dried wormwood leaves, and then tried boiling fresh wormwood and using the liquid obtained from this to treat malaria, but both did not work. Finally they     5    drew out the extract by using a lower temperature.

We use body language to express our thoughts and pinions in our interactions with other people. However, body language     1     from culture to culture. For example, in Japan, someone who witnesses another person employing the     2     for “OK” might think it means money. In France , a person encountering an identical gesture may interpret it as meaning zero. For another example, people     3     their interest by making eye contact in some countries. But in Japan you should     4     it when talking to an older person because people will look down to demonstrate respect. So remember to use body language in a way that is     5     to the culture you are in.