根据Hellman咬合发育阶段,ⅢA指的是下面哪一个阶段() A.乳牙咬合完成期

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问题:

根据Hellman咬合发育阶段,ⅢA指的是下面哪一个阶段()

A.乳牙咬合完成期

B.第一恒磨牙及恒前牙萌出开始期

C.第一恒磨牙萌出完成期

D.侧切牙群替换期

E.第二恒磨牙萌出开始期

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从1000里面减去多少个28还剩20?

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心源性脑栓塞多发于()。

A.大脑前动脉

B.大脑中动脉

C.大脑后动脉

D.椎动脉

E.基底动脉

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Customs are social habits. They have been handed down through generations (代) among groups, social classes, etc. Customs can be described as ways of doing things. They are particularly (特别) strong in social practices on the occasions (场合) of births, marriages and deaths.

In China, these days, some people in cities are learning from Western customs. For example, some brides dress in the long white dress that is usual bridal wear in many Western countries.

Every people (民族) has special customs for New Year. The Han people have many interesting Spring Festival customs. And now, quite a number of people living in the cities have followed the Western customs of sending New Year greeting cards for January 1st.

One interesting custom in China is that mothers wrap (包) up their babies tightly (紧紧的).This is not the custom in Western countries, where babies are usually dressed in loose garments.

6. It is true that customs      .

A. have been formed during a short time

B. have been formed little by little

C. have been quickly formed and changed

D. have never been changed

7. In this passage, the word “garment” is      .

A. a kind of food        B. a bed

C. a sort of clothes     D. a room

8. How do the Chinese young people learn from Western countries at their marriages?

A. The brides(新娘)have on the white clothes.

B. Men wear the white coats.

C. Their parents all have attended their marriages.

D. Their marriages are only held in the men’s homes.

9. From this passage we know      .

A. the people all over China spend New Year in the same way

B. people in the villages and cities send New Year greeting cards to each other

C. each people has his special custom for New Year

D. most of Chinese people take Spring Festival seriously

10. The difference about clothing between Chinese and Western babies is that      .

A. Chinese babies are usually dressed in new clothes

B. Chinese mothers are used to dressing their babies in colourful clothes

C. Western babies are dressed in bigger clothes while Chinese babies are usually wrapped

D. Western babies have more clothes than Chinese babies

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女性不孕因素最常见的病因是

A.无排卵
B.输卵管因素
C.子宫黏膜下肌瘤
D.宫颈细长、宫颈炎
E.子宫内膜异位症

题型:单项选择题

在EXCEL中输入公式时,可以使用()等运算符号。

A、加

B、减

C、乘

D、除

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