条形码是由一组规则排列的条、空及（）组成，用来表示一定信息的标记。A、对应文字 B、

Little Tommy was doing very badly in math. His parents had tried everything—tutors （家庭教师）， cards， special learning centers—in short， everything they could think of. Finally they took Tommy to a catholic (天主教的) school.

After the first day，little Tommy came home with a very serious look on his face. He didn’t kiss his mother hello. Instead，he went straight to his room and started studying. Books and papers were spread（铺开）out all over the room and little Tommy was hard at work. His mother was surprised. She called him down to dinner and as soon as he finished eating， he went back to his room， without a word. In no time he was back hitting the books as hard as before. This went on for some time，day after day while the mother tried to understand what was happening.

Finally，little Tommy brought home his report card. He quietly put it on the table and went up to his room and hit the books. His mom looked at it and to her surprise， little Tommy got an A in math. She could no longer hold her curiosity（好奇心）. She went to his room and asked，“Son, what was it？ Was it the nuns（修女）？”

Little Tommy looked at her and shook his head，“No.”

“Well then，”she asked again，“WHAT was it？”

Little Tommy looked at her and said，“Well, on the first day of school，when I saw that man nailed（钉）to the plus sign（加号），I knew they weren't joking.”

小题1:Why did Tommy’s parents send him to a catholic school？

A．Because he could eat well there.

B．Because he could earn more about nuns.

C．Because his parents wanted him to do better in his math.

D．Because his parents didn’t want him to learn math any more.小题2:Tommy‘s mother felt surprised that his son _______.

A．was still the same as usual

B．ate so much at dinner

C．kissed her hello after school

D．worked hard but said little小题3:“Hitting the books” means “_______” in Chinese.

A．用功

B．捶书

C．发泄

D．振作小题4:The last sentence in the passage shows that _______.

A．Tommy felt sorry for the mail

B．Tommy was afraid of being nailed

C．Tommy didn’t like the plus sign

D．Tommy liked playing jokes on others小题5: From the passage， we can infer（推断）that _______.

A．teachers should be strict with their students

B．mistaking（误解）might do good sometimes

C．a catholic school is much better than other ones

D．nuns are good at helping children with their math

白喉流行期间作流行病学调查，取石某鼻咽部分泌物，分离培养到细菌后，鉴定其是否是产毒菌株的最好方法是（）

A.亚碲酸钾血平板黑色菌落

B.CAMP试验

C.药敏试验

D.Elek平板毒力试验

E.Albert染色

牛，10月龄，皮肤干燥，被毛蓬乱乏光，掉毛、秃毛，蹄表干燥；角膜增厚及云雾状形成，角膜角化，或溃疡和羞明，夜间行动迟缓，碰撞障碍物；皮肤有痂块。最可能的诊断是（）

A.维生素A缺乏症

B.维生素B₁缺乏症

C.维生素E缺乏症

D.维生素B₂缺乏症

E.维生素K缺乏症

试述中阻抗型快速母线保护的特点。

2011年12月份，全国共销售 * * 224.80亿元，比上年同期增长30.8%。其中， * * 票机构销售128.68亿元，同比增长25.7%； * * 票机构销售96.12亿元，同比增长38.2%。

1—12月累计，全国共销售 * * 2215.82亿元，同比增长33.3%。其中， * * 票机构销售1277.97亿元。同比增长32.0%； * * 票机构销售937.85亿元，同比增长35.0%。

12月份， * * 数字型 * * 销售150.19亿元，同比增长38.8%；网点即开型 * * 销售37.43亿元，同比增长9.7%；中福在线即开型 * * 销售16.83亿元，同比增长36.5%；竞猜型 * * 销售20.35亿元，同比增长18.2%。

1—12月累计， * * 数字型 * * 销售1427.57亿元，同比增长28.3%；网点即开型 * * 销售400.06亿元，同比增长29.5%；中福在线即开型 * * 销售170.14亿元，同比增长82.5%；竞猜型 * * 销售218.05亿元，同比增长48.0%。

12月份，与上年同期相比，全国31个省份 * * 销售量均出现增长。其中，江苏、山东、广东、河南和辽宁增加额较多，同比分别增加11.17亿元、5.48亿元、5.04亿元、2.89亿元和2.69亿元。

1—12月累计，与上年同期相比，全国31个省份 * * 销售量均出现增长。其中，江苏、山东、广东、浙江和河南增加额较多，同比分别增加93.96亿元、61.29亿元、46.78亿元、27.27亿元和23.41亿元。

2011年1—12月份， * * 销售总量中 * * 数字型、即开型和竞猜型 * * 销售量之比为（）

A．64.4:25.7:9.9

B．66.8:23.1:10.1

C．68.8:25.7:5.5

D．70.6:19.5:9.9