According to the passage, what did professor Emmons propose

According to the passage, what did professor Emmons propose to have a gratitude

分类：行政能力  题型：单选题
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已知一个空问几何体的三视图如图3所示，其中正视图、侧视图都是由半圆和矩形组成，根据图中标出的尺寸，可得这个几何体的表面积

已知一个空问几何体的三视图如图3所示，其中正视图、侧视图都是由半圆和矩形组成，根据图中标出的尺寸，可得这个几何体的表面积是__________．

分类：行政能力  题型：单选题
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What should be the purpose of promoting reading according to

What should be the purpose of promoting reading according to the author?

分类：行政能力  题型：单选题
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