Reading passages

105-From the information given in the passage, one can conclude that, in Africa and Asia ….. .
A) the nomadic way of life has gained in popularity in the 20th century
B) agriculture started earlier than in other continents
C) nomadism. which disappeared in ancient times, has been revived in modern times
D) there are still people leading a nomadic way of life
E) nomads can find m6re to eat than settled farmers
Around a quarter of all prescription drugs sold around the world are believed to be based on chemicals obtained from only forty plant species. So far, fewer than 1% of the world's 265,000 flowering plants have been tested for their powers to cure. In the past few years, however, breakthroughs in computer technology, genetic engineering and other realms of biology have led to a "gold rush" to the rain forests and mountain ranges of the tropics, home to uncounted plant species. Here, scientists hope to profit from the traditional knowledge of tribes, which had previously been looked down on as "primitive" and "backward".
106- From the figures in the passage, we learn that……. .
A) there are only about 2,650 known species of plant in the world
B) about 265,000 of the world's flowering plants can be used as medicine
C) breakthroughs in technology have diminished the interest in plants with medicinal value
D) plants that can be used as medicines are worth more than gold
E) around 25 percent of the world's prescription drugs are plant-based
107- The passage tells us that tropical rain forests and mountain ranges of the tropics……. .
A)have been destroyed by the natives
B)are a rich source of plants
C)own extremely rich gold mines
D)need to be protected from those rushing there for gold
E)are home to 265,000 plant species
108-The aim of the scientists going to the rain forests and mountain ranges of the tropics is….. .
A)to extract huge amounts of gold with the help of the natives
B)to find out about the traditional ways of life of the tribes people
C)to get information from the natives about plants with medicinal value
D)to help the native peoples of the region become civilised
E)to become rich through the exploitation of the riches in the region
Given its rich resources, large population and regional importance, Nigeria's economic performance over the past decade can only be described as disappointing. Low investment and productivity levels, as well as poor infrastructure, have led to poor output. Political instability and a terrible human rights record have frightened off many potential foreign investors. However, a new government, and a package of economic measures including an exchange rate reform, may be able to put the nation on a path to recovery and growth.