信产部YD/T1095-2000中规定，并机负载电流不均衡度是不大于（）A、2％ B

类毒素是（）

A.抗毒素经甲醛处理后的物质

B.细菌素经甲醛处理后的物质

C.外毒素经甲醛处理后脱毒而保持抗原性的物质

D.内毒素经甲醛处理后脱毒而保持抗原性的物质

E.外毒素经甲醛处理后脱毒并改变了抗原性的物质

宋代把犯人推翻原来的口供称为：（）

A.悔供

B.翻复

C.翻异

D.反供

产业政策对经济发展的作用主要包括______。

A．保障国家的经济安全

B．增强产业的国际竞争力

C．促进产业结构的优化和升级

D．促进经济发展方式的转变

E．有利于计划与微观经济结合

Mother’s Day is a holiday for mothers. It is celebrated(庆祝)in the United States, England, India and some other countries. In a short time, it becomes widely celebrated. Mother’s day falls on the second Sunday in May. On that day, many people send gifts(礼物)of love to their mothers.

Those whose mothers are still living often wear a pink or red rose or carnation(康乃馨)， while those whose mothers are dead wear a white one.

The idea of a day for mothers was first given by Miss Anna Jarvis of Philadelphia. As a result of her hard work, the celebration of the first American Mother’s Day was held in Philadelphia(费城） on May 10, 1908. Soon the holiday became popular all over the country and around the world.

In China, people do the same on the day for mothers. And, in some cities, people sometimes ask a song to be broadcast(广播) for his or her mother only. This might cost a little money for some of them, but, as it is said, “Love is invaluable.”

On May 8, 1999, just the day before the Mother’s Day that year, a Chinese mother was killed in criminal bombing(罪恶轰炸). Her name is Shao Yanhuan, a heroic mother. All the Chinese will remember her forever.

小题1: Mother’s Day         .

A．is a holiday for mothers

B．is celebrated in the United Stated only

C．falls on May 10 every year

D．was given by Miss Anna Jarvis小题2:What was the date of the Mother’s Day in 1999?

A．May 7.

B．May 8.

C．May 9.

D．May 10小题3:On Mother’s Day, people       .

A．send some flowers to their mothers.

B．wear a pink or red rose or carnation

C．wear a white flower

D．send gifts of love to their mothers小题4: the underlined word “invaluable” means “   ”.

A．美好的

B．无价的

C．永恒的

D．无私的小题5:Maybe you’ve known the criminal bombing, which of the following ideas do you agree to?

A．Shao Yunhuan is a heroic mother.

B．A Chinese mother is the same as an American mother.

C．The bombing cannot get away with the crime (难逃罪责).

D．All of the above

下列除哪项外，均有脉率快的特点（）

A.数

B.促

C.滑

D.疾

E.动