The researchers found that______.
A. the gene therapy could be verified by animal experiments
B. the antitat gene may be artificially produced
C. antitat protein functions without causing any side-effects
D. antitat gene enhances the human immune system
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According to the passage, Germany is most likely to achieve its leading position in Europe through ______.
A. military expansion
B. political efforts
C. cultural exchange
D. business and trade
下列财务报表项目或科目中，一般不需要函证的项目是( )。
A. 银行存款
B. 应收票据
C. 短期借款
D. 长期应收款
Which of the following is NOT true of the unification of Germany
A. It contributed to reducing the threat of direct confrontation between the East and the West.
B. It helps to alleviate some problems existing in the former East Germany.
C. It was accomplished in 1990.
D. It brought together all the groups of people who speak German.
It can be inferred from the passage that the matching process in visual recognition is______.
A. not a neural activity
B. not possible when an object is viewed for the first time
C. not possible if a familiar object is changed in some way
D. now fully understood
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