影响矽肺发病的因素不包括（）。 A.游离二氧化硅含量 B.粉尘浓度 C.接尘时间 D

阅读理解。

     It was a sunny day. Mr Black went to town on business. On his way home, he found in front of him a big

pile of hay (干草). He got down from his horse. The hay had fallen off a wagon (马车). A boy was standing

by the wagon and looked worried. He was sorry for the little driver. "Now don't worry, my boy," Mr Black

said. "Come with me to the village over there, and I'll find someone to help you get the hay back onto the

wagon."

     In the village Mr Black's friend asked him and the boy to have dinner. Mr Black enjoyed the man's dinner,

but he saw the boy still looked worried. "Dad won't like this!" the boy said in a low voice. "Dad won't like this."

"Don't worry too much," said Mr Black. "Just be careful next time. Now have your dinner,and you needn't

hurry."

     "But I was here for a long time. Dad will be angry." "Oh,come now," said Mr Black. "Your dad will

understand, he will be glad if he knows that you have had a good dinner. I'll go with you and explain what has

happened. By the way, where's your dad?" The boy answered, "He's under the pile of hay!"

1. — Why did Mr Black go to the town?

    — Because he went there _____.

A. to visit friend

B. on business

C. to meet his son

2. What did Mr Black see on his way home?

A. A boy on a horse.

B. The boy's father on the wagon.

C. A big pile of hay on the ground.

3. _____ asked the boy to have dinner.

A. Mr Black

B. Mr Black's friend

C. The boy's father

4. What did Mr Black do while the boy still felt worried?

A. He told the boy not to hurry.

B. He asked this friend to help the boy alone.

C. He found a friend and helped the boy at once.

5. At last, we know that _____.

A. the boy was not friendly enough

B. the boy was not worried any more

C. the boy's father was still under the hay

俗话说，理解万岁，我们在与父母交往的过程中，要十分注重对父母的理解，理解了，矛盾就没了，家庭就更加和谐了。“理解父母”不包括[ ]

A．要理解父母的“唠叨”，在孩子看来的“唠叨”，其实正是父母对子女的疼爱

B．要理解、体谅父母对自己的高期待、严要求，其实是出于责任感和自己的关爱之情

C．理解父母的烦恼，倾听对子女的倾诉

D．对父母的一切行为都要给予理解

发电机并列操作时有何要求？

加强专业技术人员自身的诚信素养

有特殊原因需要延长冻结期的，每次续冻期限最长不得超过( )。

A．一个月

B．三个月

C．六个月

D．九个月