信号传递时延最短的信号网结构是（）A、直达模式信号网 B、准直达信号网 C、混合网

罩式炉所用保护气体氢气的露点要求达到（）

A.-60°

B.-40°

C.-20°

D.-50°

男，2岁，发热1周，为不规则热型，37．5～41℃，抗生素治疗无效，轻微咳嗽，入院前1天出现全身性分布淡红色斑疹，时隐时现。查体：一般情况好，浅表淋巴结不肿大，咽红、无渗出物，心、肺无异常，肝肋下4cm，质中，脾肋下1．0cm。白细胞25×10⁹／L，中性粒细胞0．92，可见中毒颗粒，红细胞4．6×10¹²／L。住院8天内3次血培养均无生长，使用静脉滴注多种抗生素无效。

该患儿的治疗应采用（）

A.大剂量抗生素

B.IVIG

C.首选萘普生

D.首选泼尼松

E.首选环磷酰胺

美国心理学会 * * 塞利格曼认为你只有（）才能出类拔萃。

A.加强自身优势

B.改进自身弱点

C.无所畏惧

D.坚持自我

阅读理解。

     A Chinese couple tried to name their baby "@", saying the character best represents their love for the child,

according to an official trying to whip the national language into shape. The unusual name stands out especially

in Mandarin (普通话), which has no alphabet and instead uses tens of thousands of multi-stroke (多笔画的)

characters to represent words. "The whole world uses it to write emails, and translated into Chinese it means

'love him'", the father explained, according to the deputy chief of the State Language Commission Li Yuming.

     While the @ symbol is familiar to Chinese email users, they often use the English word "at" to sound it out.

With a drawn-out "t", this sounds something like "ai ta", or "love him", to Mandarin speakers. Li says the name

is an extreme example of people's increasingly adventurous approach to Mandarin, as commercialization and the

Internet break down conventions (习俗).

     Another couple tried to give their child a name that in English sounds like "King Osrina".

     Li did not say if officials accepted the "＠"name. But earlier this year the government announced a ban on

names using Arabic numerals and foreign languages. Sixty million Chinese face the problem that their names

use ancient characters so uncommon that computers cannot recognize them and even fluent speakers are left

scratching their heads, said Li, according to a transcript on the government website. One of them is the former

Premier Zhu Rongji, whose name has a rare "rong" character that gives newspaper editors headaches.

1. Why did the Chinese couple try to name their baby"@"? [ ]

A. Because they wanted their baby to have a special name.

B. Because they wanted their baby to haw an international name.

C. Because the @ symbol is familiar to email users all over the world.

D. Because die ＠symbol sounds something like "ai ta", which means "love him" in Chinese.

2. It can be inferred that _____. [ ]

A. Li Yuming is in favor of the baby's name

B. many Chinese people use Arabic numerals in their names

C. a majority of the Chinese people are having longer names

D. there is little possibility for the "@" name to be officially accepted

3. The underlined part in the passage probably means "_____". [ ]

A. even native speakers find it hard to accept these strange names

B. even native speakers can't find these characters in their computers

C. even those who are expert at Chinese can't recognize these characters

D. even those who are expert at Chinese find it hard to accept these names

下述电子邮件地址正确的是（其中口表示空格）（）。

A、MALIN&NS.CNC.AC.NC

B、MALIN@ NS.CNC.AC.CN

C、LIN□MA&NS.CNC.AC.CN

D、LIN□MANS.CNC.AC.CN