もし何度も読んでもわからない場合、答え自体が文中にない可能性が高いので、NOT GIVEN を選択します。しかし、問題部分やその前後をしっかり読んでください。
YES NO NOTGIVE は意見に関しての出題
TRUE FALSE NOTGIVENは真実に関して出題
例題：といてみましょう IELTS DCより問題抜粋
"The majority of professional players on the ATP and the WTA tours now use polyester strings made by Luxilon, a company that specialised in the past in manufacturing fibres for female undergarments. The trend was started by the then little-known Brazilian player Gustavo Kuerten who more or less by chance discovered that this string was almost completely “dead” – meaning that the players are able to swing much harder at the ball and impart much more spin on it without it flying off uncontrollably as it would do with a traditional gut string. Kuerten of course went on to achieve much success and, in the clay court game at least, is regarded as one of the modern greats. His most lasting legacy though may not be his titles, rather it may be that his use of a material primarily made for women’s bras allowed him and successive champions to change how the tennis ball flew. Players were able to find completely new angles on the court because, in the hands of a master, a shot hit with a luxilon string that might look as if it were heading way out of court would suddenly drop like a stone, describing an almost perfect parabola. This technological innovation has revolutionised the way in which the game is now played. For example, Roger Federer, a man who many regard as the greatest player of all time, may have begun his career as an attacking all-court player, but in latter years he has been forced become a much more defensively orientated player who chooses his time to attack more carefully. Indeed, he is on record as saying that new string technology has changed the face of the game and that he has had to adapt his game to counter players who stand behind the baseline and produce winning shots from almost nowhere"
IELTS DC参照 Q.1 Roger Federer uses Luxillon to string his tennis racuet.