A．formationB．allianceC．combinationD．separation
A. formation
B. alliance
C. combination
D. separation
查看答案
The word hardly in the passage is closest in meaning to
A. frequently
B. likely
C. barely
D. obviously
In paragraph 7, why does the author use the example of the Acacia tree？
A. To demonstrate how ants survive by living in trees
B. To explain how two species can benefit from contact
C. To show the relationship between plants and animals
D. To present a problem that occurs often in nature
The word prominent in the passage is closest in meaning to
A. weak
B. important
C. small
D. new
The word derives in the passage is closest in meaning to
A. requests
B. pursues
C. obtains
D. rejects
微信支付 
支付宝支付