一腿站立（跳起），另一腿先向后屈，再向前下方弹踢，还原。这步伐名称是（）。

阅读理解。

     Several times my daughter had telephoned to say, "Mum, you must come and see the daffodils (水仙花)

before they are over." I wanted to go, but it was a two-hour drive from Lake Arrowhead. "I will go next

Tuesday," I promised, a little unwillingly, on her third call.

     The next Tuesday dawned cold and rainy. Still, I had promised, and so I drove there. When I finally walked

into Carolyn's house and hugged and greeted my grandchildren, I said, "Forget the daffodils, Carolyn! The

road is invisible (看不见的) in the cloud and fog, and there is nothing in the world except you and these

children that I want to see!"

     My daughter smiled calmly and said, "We drive in this weather all the time, Mum. You will never forgive

yourself if you miss this experience."

     After about twenty minutes, we turned onto a small road and I saw a small church. On the far side of the

church, I saw a hand-lettered sign that read "Daffodil Garden"?

     We got out of the car and each took a child's hand,and I followed Carolyn down the path. Then, we turned

a comer of the path, and I looked up and gasped. Before me lay the most beautiful sight? There were five acres

of flowers! "But who has done this?" I asked Carolyn. "It's just one woman," Carolyn answered. That's her

home, "Carolyn pointed to a well-kept A-frame house that looked small and modest in the midst of all that

glory. We walked up to the house. On the patio (庭院), we saw a poster." Answers to the Questions I Know

You Are Asking" was the headline.

     The first answer was a simple one. "50,000 bulbs (鳞茎)" it read. The second answer was,"One at a time,

by one woman." The third answer was, "Began in 1958."

     I thought of this woman whom I Had never met, who, more than fifty years before, had begun-one bulb

at a time-to bring the beauty and joy to the mountain top.

1. The author didn't go to see the daffodils at first because ______.

A. she was not interested in them

B. they were growing on the mountain top

C. the weather was not good enough

D. it was not easy for her to drive there

2. What do we know about the woman living in the A-frame house?

A. She must be out of mind.

B. She acted as a gardener there.

C. It took her great determination to grow the daffodils.

D. She was poor and made her living by selling daffodils.

3. What could the author probably learn front this experience?

A. Nothing is too difficult if you put your heart into it.

B. We must put the interests of others above our own.

C. We can change the world by growing flowers.

D. It's never too late to learn.

4. What would be the best title for the passage?

A. An Unforgettable Experience.

B. Beautiful Daffodils.

C. One Bulb at a Time.

D. I Love Daffodils.

根据《水利工程建设重大质量与安全事故应急预案》，事故调查报告应当包括()内容。

A.发生事故的工程基本情况

B.调查中查明的事实

C.事故原因分析及主要依据

D.事故结论

E.补救措施

（5分）燃料的发展促进了人类文明的不断进步。

（1）天然气、         和煤被称为“化石燃料”。煤燃烧时产生的溶于水形成酸雨的气体

是         （填序号）。

A．SO₂

B． CO

C． CO₂

D． NO₂（2）在农村利用秸秆、杂草、人畜粪便等产生的沼气，沼气的主要成分是甲烷，甲烷的化学式为         。

（3）罐装液化石油气的主要成分是丙烷、丁烷、丙烯、丁烯等，因此液化石油气属于    （“纯净物”或“混合物”）。

（4）氢气是最清洁的燃料，用化学方程式表示其原因         。

花束法是将（）花材集合在一起，并紧密地插在一处，使每一类花的数量、形状或花的类别等无法区分，所有花材形成一个整体。

A.相同的

B.不同的

C.两种

D.多种

什么是立党为公？