13. Answer: A Explain
· Key words: low intelligence, uncontrolled, lives · According to Hamiltonian theory in paragraph G, the unintelligent would create chaos if left to themselves. This means that their lives are uncontrolled.
· Low intelligence = unintelligent
· Uncontrolled = chaos
14. Answer: C Explain
· Key words: factors, renewed, interest, natural, medicinal, compounds
· The first sentence of paragraph C states that laboratory-based drug discovery has now “prompted the development of new approaches focusing once again on natural products”. The phrase “once again” implies that this interest in natural medicine had existed before, and now it is „renewed‟. So, this is one factor behind the renewed interest in natural products. Paragraph C then mentions another factor: “This realisation, together with several looming health crises, such as antibiotic resistance, has put bioprospecting – the search for useful compounds in nature – firmly back on the map”. The expression “back on the map” also refers to „a renewed interest‟.
· Drive = prompt
15. Answer: H Explain
· Key words: recent, technological, advances, insect, research, easier
· The only paragraph which concerns technological advances is paragraph H: it is now possible to snip out insects‟ DNA and insert them into other cells that can produce larger quantities. The phrase “now possible” suggests that it wasn‟t possible in the past, implying a great development in technology and science.
· The answer is H.
16. Answer: A Explain
· Key words: examples, animals, medicinal, substances, nature
· Paragraph A gives examples of primates which use natural substances like toxin-oozing millipedes or noxious forest plants as medicine.
· Substances = compounds
· Nature = living things
17. Answer: F Explain
· Key words: reasons, challenging, insects, drug, research · Paragraph F discusses 3 reasons why it is very difficult, or challenging, to use insects in bioprospecting (which is the search for plant and animal species from which medicinal drugs and other commercially valuable compounds can be obtained).
· Challenging = daunting
· Drug research = bioprospecting
