Read the following passage and mark the letter A, B, C or D to indicate the correct word for each of the blanks from 29 to 40.
The popular writer J K Rowling has agreed to end her part in the destruction of the world’s forests by having her books printed on paper which is environmentally friendly. The multi-millionaire author, whose novels about a teenage wizard have (29) ________ 6.5 million trees so far; is one of a number of high-profile authors who have (30) ________ their support for the environment by stipulating that only recycled paper should be used for their books. Techniques (31) ________ in Canadian mean that, for the first time, paper made from such materials as office waste paper can be used to make books. The Canadian edition of Rowling’s last book was printed without chopping down a single tree, saving an (32) ________ 40,000 of them.
In the past, it was difficult to print books on recycled paper because the paper was not strong enough to (33) ________ a lifetime’s reading. Technological (34) ________ mean that paper which is (35) ________ from waste materials is now just as (36) ________ as paper made from virgin fiber in (37) ________ of quality and strength.
Despite the high cost of developing recycled paper that has the required strength and whiteness needed for books, there will not (38) ________ be a price rise for the reader. Instead, publishers are likely to (39) ________ for the higher paper cost by using cheaper book covers, as (40) ________ in Canadian.
Trả lời câu hỏi dưới đây:
__________(39)