Bythemiddleofthe21stcentury,thevastmajorityoftheworld’spopulationwillbelivingincities_______inthecountry.
A、otherthanD
本题考查词组辨析。 rather than ：与其…(不如);不是…(而是)。句意：到二十一世纪中叶，世界上大多数人口将生活在城市而不是农村。
He found _______ difficult to study maths.
Chinaisamountainouscountry.Hills,mountains,andplateauscover_______ofthetotalarea.
________hehasmanyfriends,heisoftenfeelinglonely.
Astothevariouspollutions,whichofthefollowingisNOTtrue?
Poor speaker of English though he was at the time, he still managed to make himself ________.
