It () on Helen Keller that everything had a name.A、occurredB、downedC、dawnedD、hit
It () on Helen Keller that everything had a name.
A、occurred
B、downed
C、dawned
D、hit
It () on Helen Keller that everything had a name.
A、occurred
B、downed
C、dawned
D、hit
热放散法主要用于哪种血型系统引起的新生儿溶血病
A、ABO
B、MNS
C、Rh
D、Kell
E、Diego
用于区别强心苷和甾体皂苷的反应为()
A、Molish反应
B、红外光谱
C、Liebermann-BurChard反应
D、Keller-Kiliani反应
E、Hammarsten反应
When did her teacher come to Helen Keller?
A.When Helen was 7.
B.When Helen was 17.
C.Immediately after Helen's lost her sight and hearing.
Ken was worried because Helen was late coming home. But Helen got home safely. Ken (worry) __________.
A、didn't have/need to
B、needn't have
A.Jane and Helen are sisters.
B.Jane and Helen are undergraduates.
C.Jane and Helen are postgraduates.
D.Jane and Helen are teachers.
Finally Miss Sullivan became Helen's______.
A.friend
B.teacher
C.friend and teacher
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