The parachutelike membranes of Africa's scaly-tailed flying squirrels differ from those of the flying squirrels in the family Sciuridae because they are attached to a cartilage rod at the elbow instead of the wrist.
今天看到OG12对包含in that选项是错误的解释中提到是说:because 'in that' has largely gone out of use,it is considerd stilted and overly formal. it also uses two words when one would do. 这是不是意味着从此in that 走上了maybe,hopefully等永远错的道路?但是在旧sc中In that并不是永远错的。 请NN明示!