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【单选题】
听力原文：W. I heard that John quit his job this morning. M: How do you know that? W: I overheard him talking to Ms. Jones when I passed by the office. She was very annoyed about it. M: What did John say to her? W: He apologized again and again to Ms. Jones for not notifying her earlier. Why did John apologize to Ms. Jones?A.
Because he was late again.
B.
Because he did not inform. her earlier about his resignation.
C.
Because he said something rude to her.
D.
Because he made a serious mistake.
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A.
难以满足各分子公司个性化的需求。
B.
公司内部的权力斗争。
C.
更换供应商的成本与风险。
D.
增加物流运输成本。
E.
降低提前计划的可能性。
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A.
和视线垂直时，无近大远小效果
B.
和视线平行时，只能看到横截面
C.
越接近平行，近大远小效果越不明显
D.
越接近平行，近大远小效果越明显
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