CAT/2004

Question . 67

In the following question, the answer choices suggest alternative arrangements of four or more sentences (denoted by A, B, C, D, E, F). Choose the alternative which suggests a coherent paragraph. (2004 - 2 marks)

A. Expert such as Larry Burns, head of research at GM, reckons that only such a full-hearted leap will allow the world to cope with the mass motorization that will one day come to China or India. 

B. But once hydrogen is being produced from biomass or extracted from underground coal of made from water, using nuclear or renewable electricity, the way will be open for a huge reduction in carbon emissions from, the whole system.

C. In theory, once all the bugs have been sorted out, fuel cells should deliver better total fuel economy than any existing engines.

D. That is twice as good as the internal combustion engine, but only five percentage points better than a diesel hybrid.

E. Allowing for the resources needed to extract hydrogen from hydrocarbon, oil, coal or gas, the fuel cell has an efficiency of 30%.