废气锅炉受热面积灰过多，对（）影响最大。 A.燃油温度 B.柴油机 C.锅炉寿命 D

山洞填土式结顶的顺序为（）。

A.山洞内壁相石勾缝、填土分层夯实、拱叠结顶、搭接处加固、清洗、混凝土补强、养护、高压水枪或水泵冲去填土、洞内顶镶石勾缝、洞内地面处理加固，加强洞基横向对应支撑

B.山洞内壁框架构成、填土分层夯实、拱叠结顶、搭接处加固、清洗、混凝土补强、养护、进入洞内人工清土、最后进行洞内外镶石勾缝、洞内地面处理加固，加强洞基横向对应支撑

( )是指建设项目开工建设前进行项目规划，可行性研究报告、初步设计等前期工作所发生的费用。

A．项目建设管理费

B．预付款

C．质量保证金

D．前期工作费

阅读理解

     People around the world watched Britain's Prince William and Kate Middleton get married.

     The royal wedding broke records for live streaming on the Internet. It also produced more than

two million tweets on Twitter.

     The ceremony took place on Friday at Westminster Abbey in London.

     Kate wore a flowing white gown designed by Sarah Burton, the creative director of Alexander

McQueen. William wore a red army uniform.

     It was Britain's biggest wedding since William and Harry's parents, Prince Charles and Princess

Diana, were married in nineteen eightyone.

    Nearly two thousand guests filled the church on Friday. Hundreds of thousands of people went

to the streets and parks of London to watch the wedding on video screens.

    Among the wedding guests were English football star David Beckham and his wife Victoria,

British Prime Minister David Cameron, the king of Norway and singer Elton John.

    Bahrain's crown prince(皇储)was invited but decided not to attend because of unrest in his country.

Britain took back an invitation to the ambassador from Syria over violence against protesters there.

    After the ceremony, the royal couple traveled to Buckingham Palace. Crowds cheered when the

newlyweds appeared on a balcony, greeting to them.

    Later, William drove his wife out of Buckingham Palace in an opentop Aston Martin car. William

and the newest member of the royal family will now be known as the Duke and Duchess of Cambridge.

     Kate is twentynine years old. William will be twentynine in June. His grandmother is Queen

Elizabeth. His father, Prince Charles, is first in line to become king. William, as the older son, is second

in line. Kate would not become queen, however, since she is not in the royal blood line. There was a

big celebration at the  University of St. Andrews in Scotland. That was where William and Kate first

met as art history students in two thousand one.

1. Which of the following is NOT true about Prince William?

A. He has been in love with Kate for over ten years.

B. He wore a red army uniform in the ceremony.

C. As a prince, he is first in line to become king.

D. He once majored in art history.

2. Which of the following was absent from the wedding?

A. The Beckhams.

B. Elton John.

C. The king of Norway.

D. The crown prince of Bahrain.

3. What can be the best title of the passage?

A. The Britain's biggest wedding takes place.

B. The most luxurious wedding in the world.

C. David Beckham attends the wedding.

D. Royal wedding draws a worldwide crowd.

甲、乙两人同时从相距30千米的两地出发，相向而行。甲每小时走3.5千米，乙每小时走2.5千米。与甲同时、同地、同向出发的还有一只狗，每小时跑5千米，狗碰到乙后就回头向甲跑去，碰到甲后又回头向乙跑去，……这只狗就这样往返于甲、乙之间直到二人相遇而止，则相遇时这只狗共跑了( )千米。

A．20
B．22
C．25
D．26

请在下列药物中，选择抗原虫药（）

A.伊维菌素

B.氯苯胍

C.地克珠利

D.阿维菌素