Our new director is much younger than his ______ , who is already 50 years old.
A. successor
B. precedent
C. predecessor
D. offspring
查看答案
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
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
微信支付 
支付宝支付