Motivation and personality may ________ the varying d egrees of success in one ’s career.
A
A.说明，解释，是……的原因;B请求，申请;C冒风险，担风险;D供应(给)，提供(给)
By the middle of the 21st century, the vast majority of the world ’s population will be living in cities _______ in the country.
Which of the following is not mentioned as WTO's objective?
______ are the primary destinations for the Chinese at present.
Touristexpenditureshavedifferenteffectsonadestinationeconomy:salesbyfoodvendorstorestaurantsare_______effect;whiletaxifaresandairlineticketsalesare_______effect.