So far scientists have only acquired ________ understanding of the physical processes that cause earthquakes.
A
A不完全的、部分的B易变的、可变的C原先的、最初的D个人的、个别的
Therearemanysalesthisseason,duringwhichstoreswilllowertheir_______prices.
Iwouldlove________tothepartylastnightbutIhadtoworkextrahourstofinishareport.
Heboughtahouseforhischildren________
名词解释：preferredstock
Theybuiltahighway_______themountains.
