诊断胃癌最有价值的是（） A.血清癌胚抗原 B.钡剂检查 C.胃镜检查 D.超声胃镜
题型：单项选择题 配伍题
问题：
诊断胃癌最有价值的是（）
A.血清癌胚抗原
B.钡剂检查
C.胃镜检查
D.超声胃镜检查
E.腹部CT
题型：单项选择题 配伍题
根据所给图片完成短文。
One day, Mr. Li was 1 a book in his office after school when a ball broke the window
and flew in.. The ball 2 him on the head. So he took the ball and came downstairs to see
who threw the ball .He met a boy at the doorway and the boy said that he threw it just now.
The boy said 3 to Mr. Li and Mr. Li praised the boy for his honesty. At last Mr. Li told
the boy to be more careful next time. The boy 4 him and said goodbye to him, running
away 5 the ball.
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