【单选题】The Australian boy has a good ________ of Chinese and can express himself freely in it.
【单选题】Who _____ has common sense(常识) will do such a thing?
【简答题】The potato crop of 1946 was ____ that of 1945. A) superior than B) superior to C) more superior to D) more superior than
【单选题】前往新疆边境管理区旅游的内地居民,须持规定的有效证件,经 ( ) 查验后,才能进入边境管理区。
【简答题】Maize is an unsuitable crop in much of southern Africa because it requires ______.
【简答题】A major crop disease, if not checked, would result in ______.
【简答题】The new technique for growing rice will certainly ______ the increase of crop yields or a large scale.
【单选题】One explanation given by scientists for the crop circles is that they are made by ______.
C.
unknown flying objects
D.
new farming techniques