债务融资成本低于股权融资成本的原因有（）。 A.债务融资成本财务风险较小 B.债务融

The matter __________ your fate can't be taken for granted. You have to think it over seriously.

A．relates to

B．related to

C．relate to

D．to relate to

4月22日是世界地球日．中国今年确定的主题是“珍惜地球资源，转变发展方式，倡导低碳生活”

（1）翔安区下列举措符合上述要求的是______

A．依托农业龙头企业，建立了蔬菜、水产品等无公害农产品和绿色食品基地

B．在新店镇建设LNG燃气发电厂，用天然气发电代替传统火力发电

C．在新圩镇农村房屋建造中大力推广使用节能建筑材料

D．大力推广小型污水处理系统，将生活污水就地变为中水

（2）化学反应过程中反应物只含一个碳原子（如CO）的反应统称为一碳化学．一碳化学的主要目的是为节约煤炭和石油资源．

ⅠCO主要由煤气化得到，煤气化的主要反应有

①2C+O₂=2CO；②C+H₂O=CO+H₂；③CO+H₂O=CO₂+H₂，

上述反应属于化合反应的有______（填序号）；属于置换反应的有______（填序号）

Ⅱ天然气（CH₄）经重整可得到合成气，其反应为CH₄+H₂O=CO+3H₂．合成气在催化剂和一定条件下可制得二甲醚（C₂H₆O），同时生成水．二甲醚被称为21世纪的新型燃料．

写出合成气制取二甲醚的化学方程式______

写出二甲醚完全燃烧的化学方程式______

Ⅲ请对一碳化学的研究方向或研究重点提出一个建议______．

A woman named Emily renewing her driver’s license at the County Clerk’s office was asked to state her occupation. She hesitated, uncertain how to classify herself.

“What I mean is,” explained the recorder, “do you have a job, or are you just a …”

“Of course I have a job,” said Emily. “I’m a mother.”

“We don’t list ‘mother’ as an occupation… ‘housewife’ covers it,” said the recorder.

One day I found myself in the same situation. The clerk was obviously a career woman, confident and possessed of a high sounding title. “What is your occupation?” she asked.

The words simply popped out. “I’m a Research Associate in the field of Child Development and Human Relations.”

The clerk paused, ballpoint pen frozen in midair.

I repeated the title slowly, then I stared with wonder as my statement was written in bold, black ink on the official questionnaire.

“Might I ask,” said the clerk with new interest, “Just what you do in this field?”

Coolly, without any trace of panic in my voice, I heard myself reply, “I have a continuing program of research (what mother doesn’t), in the lab and in the field (normally I would have said indoors and out). Of course, the job is one of the most demanding in the humanities (any mother care to disagree?), and I often work 14 hours a day (24 is more like it). But the job is more challenging than most careers and rewards are more of a satisfaction rather than just money.”

There was an increasing note of respect in the clerk’s voice as she completed the form, stood up, and showed me out.

As I drove into our driveway, buoyed up (受鼓舞) by my glamorous new career, I was greeted by my lab assistants---ages 13, 7, and 3.

Upstairs I could hear our new experimental model (a 6 month old baby), in the child-development program, testing out a new vocal pattern.

I felt proud! I had gone on the official records as someone more distinguished and indispensable (不可缺少的) to mankind than “just another mother.”

Motherhood…What a glorious career! Especially when there’s a title on the door.

小题1:What can we infer from the conversation between the woman and the recorder at the beginning of the passage?

A．The recorder was impatient and rude.

B．The woman felt ashamed to admit what her job was.

C．The author was upset about the situation that mothers faced.

D．Motherhood was not recognized and respected as a job by society.小题2:How did the female clerk feel at first when the author told her occupation?

A．curious

B．indifferent

C．puzzled

D．interested小题3:Why did the woman clerk show more respect for the author?

A．Because the author cared little about rewards.

B．Because she thought the author did admirable work.

C．Because she admired the author’s research work in the lab.

D．Because the writer did something she had little knowledge of.小题4:What is the author’s purpose of writing the passage?

A．To show how you describe your job affects your feelings toward it.

B．To argue that motherhood is a worthy career and deserves respect.

C．To show that the author had a greater job than Emily.

D．To show that being a mother is hard and boring work.

安全管理措施中安全保护命令分为哪些权级。

以下减小噪声的措施中，属于在传播过程中减弱的是：（）.

A.广州市区内汽车喇叭禁鸣

B.市区内种草植树

C.戴上防噪声的耳塞

D.建筑工地上噪声大的工作要限时