It is important for specialists to be able to travel because ______.
A. there are so many people working in similar fields
B. there is a lot of social unrest at universities
C. their follow experts are scattered round the world
D. their laboratories are in remote places
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After two years he received the certificate of the college for ______ in chemistry.
A. proficiency
B. diversion
C. immersion
D. involvement
成语“分崩离析”出自( )
A. 《谏逐客书》
B. 《寡人之于国也》
C. 《季氏将伐颛臾》
D. 《秋水》
According to the book A Teen's Guide to Going Vegetarian, it could be inferred that ______.
A. some of the highest pesticide residues appear in meat and eggs
B. a meatless diet does not provide enough nutrients
C. protein can be found in almost every food
D. more than 80% of the corn in the United States are fed to livestock
我国古代第一个有巨大成就的诗人是( )
A. 屈原
B. 曹操
C. 李白
D. 杜甫
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