诊断颅盖骨折通常依据是（）
A.局部触诊闻及骨擦音
B.剧烈头痛伴呕吐
C.头颅X线摄片
D.头皮伤痕
E.对侧肢体偏瘫
参考答案：C
During the dialogue with Chinese youth in Shanghai, President Obama announced the U.S. would expand the number of students to study in China to 100,000 _______ ties between the two countries.
A．strengthening
B．strengthened
C．to strengthen
D．to be strengthened
林肯成为美国历史上受人尊敬和爱戴的总统，主要是因为 ( )
A．他维护了美国统一，解放了黑人奴隶
B．他消除了种族歧视
C．他出生贫寒却当上了总统
D．他是第一位遇刺身亡的美国总统
