[单项选择]It is taken as a great contribution made by ______ that languages in the world are classified into different language families according to their genetic relations.
A. modem linguists
B. traditional grammarians
C. sociolinguists
D. historical linguists

[单项选择]It is taken as a great contribution made by （　） that languages in the world are classified into different language families according to their genetic relations.
A. modem linguists
B. traditional grammarians
C. sociolinguists
D. historical linguists

[单项选择]It is taken as a great contribution made by ______ that languages in the world are classified into different language families according to their genetic relations.
A. modem linguists
B. traditional grammarians
C. sociolinguists
D. historical linguists

[填空题]The most important contribution that Franklin made to American ideals is that he helped create____________.

[单项选择]Mrs. Szubanska has made a great contribution to our company through ______ wide knowledge and practical, down-to-earth approach.
A. she
B. hers
C. herself
D. her

[单项选择]
The Great Barrier Reef is made of coral, a colorful rock-like substance actually composed of many small marine animals, each one less than half a centimeter in size. Coral grows in colonies that can reach over a meter and a half in height, and several of these colonies grow in close proximity to each other, eventually joining up to form an underwater chain or reef. The Great Barrier Reef refers to a series of almost three thousand coral reefs that stretch across the ocean floor in a twelve hundred mile chain, which makes it so long that it can actually be seen from space. Apart from its size, the Great Barrier Reef is also renowned for its age. The living part of the reef itself is around 8,000 years old, but sits atop the remains of dead coral that is much older, in some places almost half a million years old. A system of living organisms so anc ient and so large would be fascinating to scientists by the simple fact of
A. Rocks.
B. Colonies.
C. Animals.
D. Reefs.

[单项选择]Despite the great achievements made by China over the past decade or so, many problems remain to be solved.
A. 不顾过去十多年里中国已作出大贡献，他们仍留着许多问题来解决。
B. 尽管中国在过去的十几年中取得了伟大的成就，有许多问题仍然亟待解决。
C. 在过去十年多的时间里，显然中国取得了巨大进步，但仍有许多问题要解决。
D. 虽然在过去的十几年里，已经取得了巨大成就，中国存在的问题仍然不少。