现有H、C、O、S四种元素，请选用其中一种或几种元素写出符合下列要求的化学式：

----Who ______the computer? I want to use it.

----Timmy. He ______ it for a week.

A．borrowed, has borrowed

B．has borrowed, bought

C．has borrowed, has kept

D．bought, has borrowed

阅读理解

     Christopher Thomas, 27, was a writer by night and a teacher by day when he noticed he was always

tired and was losing weight fast. Diagnosed with diabetes(糖尿病), Thomas would need to inject himself with insulin(胰岛素) three times a day for the rest of his life or risk nerve damage, blindness, and even

death. And if that weren't bad enough, he had no health insurance.

     After a month of feeling upset, Thomas decided he'd better find a way to fight back. He left Canton,

Michigan for New York, got a job waiting tables, nicknamed himself the Diabetic Rockstar, and created

diabeticrockstar.com, a free online community for diabetics and their loved ones-a place where over

1,100 people share personal stories, information, and resources.

    Jason Swencki's son, Kody, was diagnosed with diabetes at six. Father and son visit the online children's forums(论坛) together most evenings. "Kody gets so excited, writing to kids from all over, " says

Swencki, one of the site's volunteers. "They know what he's going through, so he doesn't feel alone."

     Kody is anything but alone: Diabetes is now the seventh leading cause of death in the United States,

with 24 million diagnosed cases. And more people are being diagnosed at younger ages.

     These days, Thomas's main focus is his charity(慈善机构), Fight It, which provides medicines and

supplies to people-225 to date-who can't afford a diabetic's huge expenses. Fightit.org has raised about

$ 23,000-in products and in cash. In May, Thomas will hold the first annual Diabetic Rockstar Festival

in the Caribbean.

     Even with a staff of 22 volunteers, Thomas often devotes up to 50 hours a week to his cause, while

still doing his fulltime job waiting tables. "Of the diabetes charities out there, most are putting money into

finding a cure, " says Bentley Gubar, one of Rockstar's original members. "But Christopher is the only

person I know saying people need help now."

1. Which of the following is TRUE of Christopher Thomas?

A. He needs to go to the doctor every day.

B. He studies the leading cause of diabetes.

C. He has a positive attitude to this disease.

D. He encourages diabetics by writing articles.

2. Diabeticrockstar.com was created for ________.

A. diabetics to communicate

B. volunteers to find jobs

C. children to amuse themselves

D. rock stars to share resources

3. According to the text, Kody ________.

A. feels lonely because of his illness

B. benefits from diabeticrockstar.com

C. helps create the online kid's forums

D. writes children's stories online

4. What can we learn about Fight It?

A. It helps the diabetics in financial difficulties.

B. It organizes parties for volunteer once a year.

C. It offers less expensive medicine to diabetics.

D. It owns a wellknown medical website.

气体冷却器出口温度过高会降低切换冷凝器捕集率。

糖异生的关键酶是_（）。

A．磷酸化酶

B．乳酸脱氢酶

C．丙酮酸激酶

D．葡萄糖-6-磷酸酶

E．6-磷酸果糖激酶-1

在管道安装现场用火必须填写（）

A.地点

B.时间

C.用火证

D.操作者