关于唇腭裂,以下描述不正确的是() A.是一种较为常见的口腔颌面部先天发育畸形 B.

题型:单项选择题

问题:

关于唇腭裂,以下描述不正确的是()

A.是一种较为常见的口腔颌面部先天发育畸形

B.国内的患病率为0.82%~1.6%

C.唇腭裂错畸形的患病率为97%

D.是由于胚胎发育第5周,上颌突与球状突以及前腭突与侧腭突未及时融合而形成

E.属于遗传度较高的多基因遗传病

考点:耳鼻咽喉科(医学高级)耳鼻咽喉科综合练习耳鼻咽喉科综合练习题库
题型:单项选择题

一吨是多少千克?一千克是多少市斤?

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英语课上,老师要求同桌同学相互修改作文。假设以下便条为你同桌所写,请你对其进行修改。便条中共有10处错误,每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏词符号(^),并在此符号下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1.每处错误及其修改均仅限一词。

2.只允许修改10处,多者(从第11处起)不计分。

3.必须按答题要求做题,否则不给分。

When I was in high school, most of my friend had bicycles. I hoped I could also have it. One day I saw a second-hand bicycle, that was only one hundred yuan. I asked my father the money. But he said he could only give me half of the money. He should find the other half myself. So I went to sell newspapers after the school. My father was pleased if I showed him the money a month late. He gives me the other fifty. You can imagine how much happy I was when I rode to school on my own bicycle.

题型:单项选择题

在横线里填上最简分数

90秒=______分 60公顷=______平方千米 18平方分米=______平方米.

题型:单项选择题

非技术风险不包括( )。

A.自然环境风险

B.工艺技术

C.政治与法律风险

D.经济风险

题型:单项选择题

Look! The boys       football under the tree.

A.play

B.is play

C.is playing

D.are playing

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