His new yacht is certainly an ostentatious display of his wealth.
Giải chi tiết:
Đáp án là A. ostentatious = showy: khoe khoang
Các từ còn lại: expensive: đắt; large: rộng; ossified: cứng nhắc
Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.
Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.