中国石油大学 / 中石油
正确率:100%
4. Coutries with annual per capita income below $9,386 but above $765 are regarded as ___countries.
A、low-income
B、high-income
C、middle-income
D、none
A、low-income
B、high-income
C、middle-income
D、none
参考答案:
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