冠周炎最常见于（） A.下颌第三磨牙 B.上颌第三磨牙 C.上颌磨牙 D.下颌磨牙

新生儿从母乳中获得的Ig是()

A．IgA类抗体

B．IgM类抗体

C．IgG类抗体

D．IgD类抗体

E．IgE类抗体

定痛和血汤功效与作用

阅读理解。

     Friendship Day in India falls on the first Sunday of August every year. It is celebrated with many activities.

     Young people in India spend the day with their closest friends and have fun together. Most youngsters in

India plan a movie or have a meal with their friends. Many friends may go on a drive to tourist places or go

camping. Some friends go to the supermarket for shopping. On Friendship Day, most stores offer discounted

(打折的) prices for customers and it is the perfect day to buy something for friends.

     Some friends go to parties that are organized by many restaurants in order to attract youngsters. Such

parties are very enjoyable. You can get food at a discounted price. Some friends just decide to meet up (碰头,

相聚) at someone's home and talk about their happy time. The time good friends spend sitting together and

talking over a cup of coffee is unforgettable.

     Long-distance friends call up each other on this day and wish each other with warm feelings. Some of

them even plan to meet up on this day. Yet some others plan a surprising visit just to see their friend gasp (喘

息) in shock!

1. When is Friendship Day celebrated in India?

A. On August 2nd every year.

B. On the third weekend of August every year.

C. On August 1st every year.

D. On the first weekend of August every year.

2. According to the text, which of the following is the most popular way that youngsters in

    India celebrate Friendship Day?

A. Traveling with friends

B. Seeing a film with friends

C. Dancing with friends

D. Going shopping with friends.

3. How many ways of friends spending Friendship Day together are discussed in Paragraph 3?

A. Two

B. Three

C. Four

D. Five

4. The underlined phrase"a surprising visit" in Paragraph 4 refers to"____".

A. a visit to a friend who hasn't expected it

B. a visit to a friend who has dreamed of it for a long time

C. a visit to a friend who tries to avoid it

D. a visit to a friend who lives in a faraway place

可燃固体物质的粉碎、筛选处理及其粉末输送可采用( )进行覆盖保护。

A．一氧化碳
B．二氧化碳
C．丙酮
D．乙烯

反应型供应链是指通过提高产品的（），以尽快满足复杂多变的需求，充分利用每一个新的市场机会的供应链类型。