A．ownB．uniqueC．otherD．different
A. own
B. unique
C. other
D. different
查看答案
As he had already been accustomed to living in the countryside,Jackson refused to
A. used to
B. got used to
C. been fond to
D. preferred
Which of the following is NOT true about natural selection？
A. Natural selection favors adaptations that help a species to Survive.
B. Natural selection works against extreme changes in a species.
C. Natural selection allows helpful, new traits to spread through a population.
D. Natural selection occurs in periods of severe environmental disturbances.
The word "donate" (Line 2, Paragraph 4) is closest in meaning to____.
A. "give"
B. "send"
C. "take"
D. "move"
Over six million citizens of the United States benefit from private pension plans
A. unauthorized
B. confidential
C. nontransferable
D. non-governmental
微信支付 
支付宝支付