题目:
霍乱最主要的传播形式是通过()
A.水
B.生活接触
C.食物
D.苍蝇媒介
E.以上都不是
答案:
参考答案:A
霍乱最主要的传播形式是通过()
A.水
B.生活接触
C.食物
D.苍蝇媒介
E.以上都不是
参考答案:A
下面是小波写给小叔的信,其中有几处错误(格式、语言文字错误各3处)请你帮助他改正过来。
|
(8分)过氧化钠(Na2O2)因为能与水、CO2等反应产生氧气而作为供氧剂。现将39克Na2O2投入到足量的水中,发生如下反应:
2Na2O2 +2H2O =" 4NaOH" + O2↑
(1)请计算生成NaOH和O2的质量。
(2)若反应开始时水的质量为69克,求反应后所得溶液的溶质的质量分数。
Teaching materials for learning Chinese are provided here. There are sites where you may find interesting instructions suitable for you. Here are some sites to begin your surfing.
You may start with these pages from this website — just to get a little taste of it without working too hard.
● A Is For Love Flash cards for learning a few Chinese words
● Listening to the sound of Chinese Play a few words of Chinese on your computer.
● A few Chinese words Each word is enlarged for easy study.
If you are studying Chinese, these tools can help.
● Zhongwen site More than a dictionary!
● Clavis Sinica
Excellent program by Professor David Porter. It displays a whole document in Chinese [GB] or [BIG5], and gives individual word’s definition, pronunciation as well as much more information when you click on that word.
If you are studying Chinese, this is a very useful tool.
● Chinese Character Visual Dictionary
If you like to know more, go to the following sites on the Internet.
● The Chinese Outpost
Pronunciation, Character and Grammer By Mark Andrew Baker. The best. A must-visit site.
● Learn Cantonese / Mandarin Online
● Internet Based Chinese Teaching and Learning
● Rainland Kids discover Chinese — Site is in Germany
If you want to have a better understanding of China, go to this one.
● Wanfang Data
As an affiliate (分支) of Chinese Ministry of Science & Technology, Wanfang Data has been the leading information provider in China since 1950s. With a wide range of database resources and value-added services, Wanfang Data has become a gateway to understanding Chinese culture, medicine, business, science, etc.
66. The underlined lines are probably some ______.
A. book B. websites C. tips for learning Chinese D. dictionaries for learning Chinese
67. This passage is most probably from ______.
A. a TV programme B. a teacher’s lecture C. a newspaper D. the Internet
68. If you want to know each Chinese character’s definition, pronunciation and much more information, you’d better surf ______.
A. Zhongwen site B. A Is For Love C. Clavis Sinica D. A few Chinese words
69. If you want to know China about its culture, medicine, business, science, you’d better surf ______.
A. Learn Mandarin online B. Wanfang Data
C. Rainland kids discover Chinese D. The Chinese Outpost
70. The underlined word “gateway” in the last paragraph probably refers to ______.
A. an opening in a wall that can be closed by a gate
B. a place through which you can go to another place
C. the space when a door is open
D. a means of getting or achieving something
烂喉痧见壮热,烦渴,咽喉肿痛糜烂,甚则气道不通,肌肤丹痧紫赤密布,红晕融合成片,舌绛干燥起芒刺,状如杨梅,其治法为()
A.气营两清,透邪外出
B.凉血解毒,疏风消肿
C.清营养阴,解毒透邪
D.清气解毒,透泻郁热
E.气血两清,解毒救阴
某直接参与者小额支付系统当前圈存资金为100万元,如该参与者想将圈存资金调整为1000万元,则其清算账户余额应为()此次调整才能成功?
A.900
B.1100
C.1500
D.950