研究粒度组成的方法是按照国家标准进行筛分试验，必要时还应测定（）等。 A.粒度 B.

阅读理解。

     If you look at the word Christmas, you can see the word Christ in it. On Christmas, people celebrate (庆祝) the

birthday of Jesus Christ.

     Of course (当然) not everyone in America thinks Christ a great man, but Christmas is a holiday for all the people.

It's on December 25. Shops and schools are not open. Almost (几乎) every family has a Christmas tree in the house.

People make their Christmas trees very beautiful.   They put many colored bulbs on the trees.   The bulbs make the

trees  more  beautiful  at   night.   They also put some dolls,   balls and small animals on the trees. On Christmas day

almost everyone gives gifts to others and also gets gifts from others.

1. The word Christmas comes from          .

A. the name of a holiday

B. the name of a tree

C. the man of a man

D. the name of some presents

2. In America people celebrate Christmas because          .

A. it is a holiday

B. Jesus Christ died

C. shops and schools are not open

D. they can get gifts

3. People have Christmas trees in their houses          .

A. to put some small things on them

B. to make their houses beautiful

C. because they like trees        

D. because shops will not open

4. The word "bulb"means something that _________.

A. can give us light

B. children can play with

C. people can eat

D. can make people sleep well at night

5. On Christmas,  __________. 

A. parents give gifts to children

B. boys give gifts to girls or boys

C. students give gifts to their teachers

D. almost everyone gives gifts to others and also gets gifts from others

工程优化阶段，优化单位应将单站优化、分簇/分区/不同厂家交界优化和全网优化中发现的工程整改类问题提交（）。

A.网优中心

B.基站维护

C.施工队

D.网建部门

根据句意和汉语提示写出单词，完成句子。每空一词。

小题1:--- Have you heard about the news?

--- Yes. The __________(价格) of petrol(汽油) went up last month.

小题2:We are very ___________ (自豪) that a student from our school has won the first prize.

小题3:Why are you in a _____________ (匆忙) to sell your house?

小题4:People think that Hepburn’s achievements went ______________ (超出) the film industry.

小题5:Mary _______________ (拒绝) to do the work, so I had to ask John to do it instead.

电力电缆路径走向切忌（）。

属于不确定性产生原因的是( )。

A．市场变化

B．技术进步

C．通货膨胀

D．市场环境、气候的不同

E．市场供求结构的变化