蛋白质的C末端是（）。 A.含有α-羧基的一端 B.含有β-羧基的一端 C.含有α-

下图①②③④是植物体内几项生理活动关系示意图，请回答：

(1)通过[①]____________把[A]________转变成储存在_______中的稳定的化学能。

(2)影响[②]____________的环境因素主要是____________________。

(3)完成①过程的场所是________，完成②过程的主要场所是_________。

(4)在啤酒生产中，酵母菌大量繁殖时，通过上图中______(填序号)获得能量；发酵时，通过_____(填序号)(获得能量)。

患者，女，77岁。间断咳嗽、喘息30余年，近5年出现下肢水肿。2周前着凉后咳喘加重。查体：球结膜水肿，双肺可闻及干、湿啰音，双下肢水肿（++）。血气分析：pH7.32，PaCO₂78mmHg，PaO₂51mmHg。不宜采用的措施是（）

A.静脉滴注呼吸兴奋剂

B.持续低流量吸氧

C.静脉滴注广谱抗生素

D.雾化吸入M受体拮抗剂

E.口服糖皮质激素

简述货币期货交易与远期外汇交易的异同。

Centerville High School Essay Contest  “Write All About It”

Calling All Aspiring Authors—Centerville High School Essay Contest

◇Rules

1．Students are asked to present essays of 500 to 700 words of their own work. Any essay containing material plagiarized(剽窃) from another source will be disqualified（取消资格）.

2．Manuscripts should be typed double－spaced，with the student's name，address，and grade level on a separate sheet of paper.

3．Essays must be turned in by 4∶00 p.m. on November 30.They can be brought to Mrs. Elton in Rom 104 or to Mr. Markham in the school library.

◇Essay－Writing Tips

1．Catch your readers' interests—Your opening should immediately pull your readers into your essay. Asking a question or starting with an story，quotation，or surprising statement is a good way to do this.

2．Create a picture—Use active words that show your readers what is happening. Instead of telling your readers vaguely that “the room was disordered”，paint a picture using active verbs and lively adjectives.

3．Have a purpose—Well－written essays do more than just describe an incident or express a viewpoint，and they also communicate a message.

4．Check for mistakes—Read your paper over to check for mistakes. Ask another student to read your paper and make suggestions. Another pair of eyes will often spot a mistake you've overlooked.

5．Format your essay—Neatly type your essay on white paper. Choose an attractive cover for submission. The computer lab will be open after school from 3∶15 to 4∶45 p．m. each day this month so that students can use the computers.

◇Prizes

Winning essays will be published in the Centerville Times. Every contestant(选手)will also receive a free pass to enter one school activity or athletic game this year.

First Prize：　　　$150

Second Prize:    Dictionary and thesaurus

Third Prize:     Pen set and journal

Special thanks to the Centerville Writers' Association for the prizes to help encourage our aspiring authors. Good luck to all contestants.

小题1:The first writing tip given is mostly about________.

A．the use of quotations and stories in an essay

B．using active verbs and lively adjectives

C．how a student should begin an essay

D．how to submit your essays小题2:Information in the passage suggests that________.

A．the essay contest has been carefully planned

B．the students of the school are all athletic lovers

C．most essay contestants have published their work previously

D．Mr. Markham is an English teacher at Centerville High School小题3:The prize section of the poster is included in order to________.

A．show organizations how to donate prizes

B．inform teachers of the prizes available

C．persuade students to enter the essay contest

D．convince students to buy the local newspaper小题4:Thanks are given to the Centerville Writers' Association because it has________.

A．offered to judge the contest

B．prepared the essay－writing tips

C．organized the essay contest

D．donated prizes for the contest小题5:What do we know by inference from the passage?

A．The computer lab usually closes at 4∶15 p.m. each day.

B．Winning essays will be published in the Centerville Times.

C．Every contestant will benefit from the essay contest.

D．The essay contest is held annually at Centerville High School.

暂设电力变压器低压供电侧敷设的电缆线路不宜过长，规范规定一般电压损失率应小于或等于( )，线路过长则供电线路的电压损失将过大，一般供电半径应控制在700m左右。

A．3%
B．4%
C．5%
D．6%