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【单选题】
Which of the following would be the most appropriate title for the passage?A.
The Proportion of Test-tube Girls to Boys
B.
Are Test-tube Babies Healthy?
C.
The Social Meaning of the Idea of Test-tube Babies
D.
The Moral Issue Associated with Test-tube Babies
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【单选题】纤溶系统亢进引起的出血宜选用 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
维生素K
B.
鱼精蛋白
C.
右旋糖酐
D.
氨甲苯酸
E.
华法林
【单选题】—______the woman there be our English teacher? —She______ be, but I' m not sure.
A.
May... mustn't
B.
Can... may
C.
Can... can't
D.
Must... needn't