Super Rice - Test 5

C1 Advanced · Word Formation · Cambridge English Advanced 2, Cambridge University Press

For questions 1–8, read the text below. Use the word given in capitals at the end of some of the lines to form a word that fits in the gap in the same line.

FAVOUR

PROBLEM

INTENSE

STABLE

EFFECT

PERFORM

RESIST

LESS

Rice crops fail in drought conditions or where the soil is too (0) ___ . So work is underway to 'climate-proof' rice so it can grow in even the most (17) ___ of conditions. Drought affects 23 million hectares of rice annually, and salt is equally (18) ___ ; it reduces yields by 40% and consequently (19) ___ the pressures on food supplies. Further reductions in yields are likely due to climate (20) ___ . Scientists are attempting to produce a super rice by mixing genes from drought-tolerant plants with those from another that exploits nitrogen (21) ___ , thus enabling it to grow without fertiliser. Comparing the new rice's (22) ___ with that of ordinary rice, the super rice produced 17% more than the ordinary variety in individual trials and 42% more when subjected to a combination of stresses. In addition, researchers are working on improving other crops. For example, one team has a potato that is (23) ___ to certain diseases. It is hoped that developments such as this will (24) ___ the impact of climate change in developing countries.

Super Rice

SALT

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