Now scientists are bringing this ancient wisdom up-to-date.
2018年6月四級(jí)真題(第三套)閱讀 Section C
英語六級(jí)真題
Measuring emissions is not a precise science, particularly when it comes to issues surrounding land use; not all nations have released up-to-date data, and in any case, emissions from some sectors such as aviation are not included in national statistics.