A.have died
B.having died
C.dying
D.dead
A.experience
B.expectation
C.expression
D.expense
A.Di George综合征 B.Wiscon-Aldrich综合征
C.Nezelof综合征 D.孤立性IgA缺乏症
体液免疫缺陷为主
A.shone brightly and then died out
B.fluttered and became dim
C.burnt unsteadily and gradually died out
D.burnt brightly and then became dim
A.insurance
B.ensurance
C.assurance
D.reassurance
A.popularity
B.population
C.popularization
D.polar
A.dying
B.died
C.death
D.to die
year of 1922.
A.films
B.shadows
C.reflections
D.images