[单项选择] Although the chemical elements niobium and tantalum are not quite ----------zirconium and hafnium, the differences between them are slight
A. as similar
B. as similar as
C. similar than
D. that similar

[填空题]chemical

[填空题]although

[简答题]Chemical Oxygen Demand

[单项选择]Formosan Union Chemical
Nan King E.Road
Taipei City
638 Taiwan
Tel: (88-62) 5071234
Fax: (88-62) 5071664
e-mail: formosan@chemical.com.ta
Chemex
Livingstone Industrial Estate
Livingstone
West Lothian
EH 54 1HZ
Scotland
January 15,200-
Dear Sir or Madam:
We are looking for a company which can help us distribute our products in new markets.
We manufacture a wide range of chemical products. At present we export to Canada, but we would like to export to Europe.
Enclosed please find our brochure which gives details of our company.
We look forward to hearing from you.
Sincerely,
Formosan Union Chemical does not export to Canada.
A. right B. worng C. Doesn’t say

[单项选择]Environmental factors such as chemical treatments have a bad effect on the hair in the long nm.
A.环境因素，比如化学处理等对头发都不好。
B.从长远来看，环境，化学处理对头发都有影响。
C.从长远来看，头发被化学等因素的影响是很坏的。
D.从长远来看，环境因素，比如化学处理对头发都有不好的影响。

[单项选择]CONTENTS Chapter One Basic elements: Principles and general framework of German development policy 1 Domestic conditions and development: Basic criteria for German development policy 6 Chapter Two Priority concerns of German development policy: Poverty, education, environmental protection 9 Poverty 11 Strategies for reducing poverty 13 Education 18 Environmental protection and resource conservation 33 Chapter Three Implementation of German development policy: Organization, instruments and procedures 50 Bilateral Germa
A. German development policy.
B. German rural development.
C. German development assistance.
D. German development agencies.

[填空题]The important metallic chemical element in making stainless steel is ______.

[单项选择]Although television was developed for broadcasting, many important uses have been found that have nothing to do with it.（）
A. 电视不仅促进了节目的播送，而且也有很多其他重要的作用。
B. 尽管开发电视的初衷是为了播送节目，后来却发现电视还有很多与此毫无关系的重要用途。
C. 为了播送节目电视被开发出来，相应地，很多与此有关的重要用途也被发现。
D. 尽管开发电视的初衷是为了播送节目，后来却发现其实电视的重要用途都与此无关。

[单项选择]Although custom prosthetic bone replacements produced through a new computer-aided design process will cost more than twice as much as ordinary replacements, custom replacements should still be cost-effective. Not only will surgery and recovery time be reduced, but custom replacements should last longer, thereby reducing the need for further hospital stays.
Which of the following must be studied in order to evaluate the argument presented above
A. The amount of time a patient spends in surgery versus the amount of time spent recovering from surgery.
B. The amount by which the cost of producing custom replacements has declined with the introduction of the new technique for producing them.
C. The degree to which the use of custom replacements is likely to reduce the need for repeat surgery when compared with the use of ordinary replacements.
D. The degree to which custom replacements produced with the new technique are more carefully manufactured than are ordinary replacements.
E. (E) The amount by which custom replacements produced with the new technique will drop in cost as the production procedures become standardized and applicable on a larger scale.

[填空题]There are four common elements in friendship which make possible bridges between different people.