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【单选题】
腹部手术时,为减少粘连性肠梗阻的发生,以下哪一项操作处理是不正确的?A.
清除手套上的淀粉、滑石粉、不遗留线头等异物于腹腔内
B.
可以大块组织结扎，只要不出血，节省手术时间
C.
注意无菌操作，减少炎性渗出
D.
保护肠浆膜面，防止损伤与干燥
E.
冲洗清除腹腔内积血、积液，必要时放置引流
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【多选题】光从光密介质射入光疏介质。当入射角增大到某一角度，使折射角达90°时，折射光完全消失，只剩反射光，这种现象称为（ ）。 发生全反射所对应的入射角称为（ ）。
A.
全反射
B.
折射角
C.
临界角
D.
折光现象
【简答题】阅读理解 The day was Thankful Thursday. It's a weekly tradition that my two little girls and I began years ago. Thursday has become our day to go out and make a positive contribution. On this particular T...
【单选题】听力原文： Today it's my turn to give the weekly oral presentation, and the topic that Professor May had assigned to me is 'the life of the poet, Emily Dickinson'. Compared with Walt Whitman whom we discus...
A.
A poet.
B.
A teacher.
C.
A student.
D.
An artist.
【单选题】My writing in my late teens and early adulthood was fashioned after the U.S. short stories and poetry taught in the high schools of the 1940s and 1950s, but by the 1960s, after I had gone to college a...
A.
The artful nature of Native American life compels the author to explore and write about that heritage.
B.
Art is an important part of Native American life and should be a part of everyone's existence.
C.
The author remembers his childhood, especially his parents and the elders in his community, in a very positive way.
D.
A desire to return to traditional Native American values led the author to write about Native American issues.
【单选题】听力原文： Today it's my turn to give the weekly oral presentation, and the topic that Professor May had assigned to me is“the life of the poet, Emily Dickinson”. Compared with Walt Whitman whom we discuss...
A.
A poet.
B.
A teacher.
C.
A student.
D.
An artist.
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