The preservation of the dead body was accomplished through a process of mummification. The ancient left no written accounts as to the execution of this process.
Giải chi tiết:
accomplished: đã được thực hiện => Đáp án là D. performed
Các từ còn lại: A. carried: được mang; achieved: được đạt; reproduced: được sản xuất lại
Population growth rates vary among regions and even among countries within the same region.
Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.
Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.