用药剂量过大或药物在体内蓄积过多发生的危害性反应是（） A.副反应  B.毒性反应

John Smith was a good math student at a high school. He loved his computer. He came home early every day. Then he worked with it till midnight. But John was not a good English student, not good at all. He got an F in his English class. One day after school, John joined his computer to the computer in his high school office. The school office computer had the grades of all the students: the math grades, the science grades, the grades in arts and music, and grades in English. He found his English grade. An F! John changed his English grade from F to A. John’s parents looked at his report card. They were very happy. “An A in English!” said John’s Dad. “You are a very clever boy, John. ”

John is a hacker. Hackers know how to take information from other computers and put new information in. Using a modem, their computers are connected to other computers secretly. School headmasters and teachers are worried about hackers. So are the police, for some people even take money from bank computer account（帐户）and put it into their own ones. And they never have to leave home to do it! They are called hackers.

小题1:John changed his English grade with the computer in ______.

A．the classroom

B．the school office

C．a bank near his house

D．his own house小题2:When John’s parents saw the report, they were happy because ______.

A．John was good at math

B．John loved computers

C．John could join one computer to another

D．they thought John was not poor in English any longer.小题3:Who are worried about hackers in the story?

A．John’s parents

B．School headmasters, teachers and the police.

C．The police.

D．School headmasters and teachers.小题4:What should the hackers know well, do you think, after you read this story?

A．Information

B．Bank computer accounts

C．Computers

D．Grades小题5:The last paragraph is about _______.

A．John

B．computers

C．hackers

D．modem

2011年河北省农产品出口情况

2011年，河北省农产品均出口总额41.1亿美元，同比增长21.2%，其中进口同比增长20.6%。

2011年12月，河北省农产品出口，进口额均创历史新高，当月进出口4.5亿美元，同比增长30.7%，环比总裁35.0%，其中出口1.6亿美元，同比增长8.2%，环比增长8.8%，进口2.9亿美元，同比增长46.6%，环比增长54.5%。

2011 年，河北省农产品阅读出口除2月受春节假期影响外均超过1亿美元，月度同比实现全面增长，环比2月下降较多，5、6、8月有小幅下降，其余各月环比均持续快速增长，12月更是创历史新高；同时，进口规模不断扩大，其中有6个月超过2亿美元，12月创历史新高，直逼3亿美元。

 2011 年，河北省农产品主要出口贸易伙伴均实现全面增长，日本是河北省第一大出口贸易伙伴，受日本大地震影响，上半年河北省农产品对日本出口连续快速下滑，8月以后得到恢复，全年对日本出口3.4亿美元，同比增长0.3%；对欧盟和东盟出口增长较为迅速，全年分别对欧盟和东盟出口2.7亿美元和2.4亿美元，分别增长35.6%和25.6%，对韩国出口1.6亿美元，增长18.9%，上述四者合计占出口总额的67.3%。此外对美国出口9164万美元，增长 9.1%，对香港出口6756万美元，增长72.9%，对台湾出口5650万美元，增长26.3%

关于河北省农产品进出口额情况，以下说法错误的是：

A.2011年，河北省农产品月度出口有11个月保持在1亿美元以上 

B.2011年12月，河北省农产品进口、出口、进出口总额均创阅读历史最高 

C.2011年，河北省农产品单月进口额均低于3亿美元 

D.2011年，河北省农产品6月的出口额比5月高

对于开放性肺结核患者隔离措施正确的是（）

A.接触患者前后可以不洗手

B.嘱患者咳嗽或打喷嚏时，以卫生纸掩住口鼻

C.接触传染期患者，可以不戴口罩

D.患者的痰液收集在广口瓶中，然后倒入污物桶

E.探视者可以近距离与患者交谈

组织气体交换是指血浆与组织液之间进行______和______的交换。

我军“优待俘虏、瓦解敌军”的政治工作原则只适用于国内战争，对于民族战争则另当别论。