43. The epithelial tissues of human body are the most likely tissues to be in contact with the environment.
Which kind of epithelial tissue covers the air sacs of the lungs?
(A)Stratified squamous epithelium
(B) Pseudostratified columnar epithelium
(C) Simple squamous epithelium
(D)Simple columnar epithelium
(E)Cuboidal epithelium
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單層鱗狀上皮由扁平狀細胞形成一層很薄的皮...
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