Which of the following statements does the author imply?
A.Scientists engaged in theoretical research should not be blamed for ignoring the practical side of their discoveries.
B.Today few people have any notions of the meaning of science.
C.In science, it is not difficult to distinguish fact from fiction.
D.Practical-minded people can understand the meaning and objectives of pure science.
第3题
下列哪项是胃溃疡的典型X线征象()。
A、排空慢
B、黏膜中断破坏
C、充盈缺损
D、龛影
E、胃腔增大
第5题
胃癌的钡餐X线不可见下列哪项
A、充盈缺损
B、黏膜中断、破坏
C、胃壁僵硬
D、蠕动增强
E、胃腔内龛影
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