Question 1
Answer: C
While climate change is an important dynamic in the search for new forms of propulsion, the author's main argument does not concern climate change itself - rather - it centres around hydrogen vehicles and their development, so A is incorrect. D is also wrong as the focus is not on electric vehicles either.
Even though the author does tell us that hydrogen is not currently a viable solution, making C seem tempting, that is not what the author is arguing for. Instead, what the author actively argues/campaigns for is more investment in hydrogen development. Therefore, B is the correct answer.
Question 2
Answer: B
"Silver bullet" is an expression, the meaning of which you may simply know. Even if you don't, you can work out that the answer is B using the context and deduction.
E - the literal answer - is obviously wrong. The author would not argue for hydrogen development if it could not deliver its promises, so D cannot be right either. C is not right because hydrogen is not "fashionable" yet, certainty not compared with the the much more common electric vehicles. As for A, the author is hardly going to argue for something which is actually a threat to the planet.
Question 3
Answer: D
Answer E can be immediately eliminated. The fact that the only waste product from burning hydrogen is water is clearly a benefit over conventional fuels rather than a problem.
Answers A-C are all mentioned as problems with hydrogen propulsion.
However, D is the correct answer because if the environmental impact of acquiring hydrogen in the first place is greater than the environmental benefit of using it, its fundamental purpose is undermined. That makes it a much more significant problem that the other options. The author states: "what is the point of 'going green' in the first place if just as much environmental damage is done acquiring the 'green fuel' as is saved from not using petrol or diesel".
Question 4
Answer: A
Although the author makes some specific claims about Government funding, such as the £972 million deficit, the main thrust of the author’s point is that the funding is insufficient.