A. what
B. that
C. which
D. where
[单选题]Scientists have many theories about how the universe ___ into being.A. cameB. was comingC. had comeD. would come
[单选题]Many scientists have been probing psychological problems.A.solvingB.exploringC.settlingD.handling
[单选题]43. _________ scientists have done a lot of research on A (HINl) flu,there are still some cases for further study.A.AsB.OnceC.IfD.Although
[单选题]So far scientists have only acquired______understanding of the physical processes that cause earthquakes.A.a partialB.a changeableC.an originalD.an individual
[单选题]Reform and opening-up have brought about profound changes to the lives of t
[单选题]Despite years of searching, scientists have detected no signs of life beyon
[单选题]根据以下材料,回答It′s one of our common beliefs that miceare afraid of cats. Scient
[单选题]根据以下材料,回答It′s one of our common beliefs that miceare afraid of cats. Scient
[单选题]根据以下材料,回答It′s one of our common beliefs that miceare afraid of cats. Scient
[单选题]根据以下材料,回答It′s one of our common beliefs that miceare afraid of cats. Scient