要求磨削的表面粗糙度小，应选择( ) A．粒度号大的砂轮 B．粒度号小的砂轮 C

下列关于可转换债券的市场价格的说法错误的是( )。

A．当市场价格与转换价值相同时，称为转换平价

B．当市场价格高于理论价值时，称为转换升水

C．当市场价格低于转换价值时，称为转换贴水

D．可转换债券的市场价格至少应相当于以下两者中的较低者：债券的转换价值和投资价值

-For five days, Edmonton's Downtown Park is transformed into one huge stage where artists are able to share their talents, and where people are able to celebrate(庆祝) and enjoy themselves. Since its beginning in 1980, the Edmonton Folk Music Festival has been commemorating (纪念) the true feeling of what folk music is all about and that's the traditional togetherness that is felt when people gather to share stories and feelings through song.

This year will be the sixth year when volunteer Riedel will be offering up her time to the festival. "People coming off a busy spring and summer have a moment of relaxation," Riedel said. "It's really easy to relax, and it's great seeing family and friends have fun together." These families and friends come from all different kinds of musical tastes. People who take pleasure in Blues are there, so are people who love Bluegrass. This festival does its best to develop everyone's musical interests.

With so many years of experience, the festival has become a well-oiled machine, and does whatever it can to make attendees feel as comfortable as possible. There are free water stations throughout the venue (举办地) for people to fill up their travel cups. When people buy food, reusable dishes are given a $2 plate fee, but that is returned when the plate is brought back.

The festival has completely sold out of tickets, and in record time. But with big names such as Van Morrison and Jakob Dylan, it's easy to see how that was going to happen. There is no parking area during the festival, so using the Park & Ride system or Edmonton Transit is highly recommended. A bike lock-up area is provided and will be available Thursday until Sunday one hour before the gates open until 45 minutes after the gates close.

The Edmonton Folk Music Festival begins on Wednesday, Aug. 4 with Van Morrison playing the special donation fund (基金) concert, and will finish up on Sunday, Aug. 8.

小题1:The Edmonton Folk Music Festival is held mainly to ________.

A．gather people with different musical tastes

B．remind people of the real sense of folk music

C．exhibitive good voices of great talents in folk music

D．collect old stories of folk music小题2:Which of the following is TRUE according to the passage?

A．Riedel has volunteered for the festival for at least 5 years.

B．It's hard for people to appreciate Blues.

C．It costs people a little to fill up their cups from water stations.

D．People have to pay $2 for a plate of food.小题3:We can learn from the passage that ________.

A．people can get tickets easily for the festival

B．the Edmonton Folk Music Festival is well organized.

C．driving one's own car to the festival is highly recommended

D．bikes are available at the festival from Wednesday to Sunday小题4:What would be the best title for the passage?

A．Folk Music of Blues

B．One Festival for All

C．Festival for family Gathering

D．Edmonton's Downtown Park

炼油厂工艺加热炉的选用原则是什么？

《黄帝内经》对恒牙的萌出是如何描述的？请简述之。

改类是改变用电（）的简称。

A.方式

B.方案

C.容量

D.类别