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Any population increase beyond a certain level necessitates greater _____vegetable foods; thus, the ability of a society to choose meat over cereals always arises, in part, from_____the number of people.
Blank(i) Blank(ii)
A.recourse to
B.attention to
C.exporting of
D.replenishing
E.limiting
F.varying
Blank(i) Blank(ii)
A.recourse to
B.attention to
C.exporting of
D.replenishing
E.limiting
F.varying
| 重点单词 | 查看全部解释 | |||
| certain | ['sə:tn] | |||
| recourse | [ri'kɔ:s] | 联想记忆 | ||
| population | [.pɔpju'leiʃən] | 联想记忆 |
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