Under the global "health for all" strategy, WHO (the World Health Organization) and its members

Câu hỏi :

Under the global "health for all" strategy, WHO (the World Health Organization) and its members have placed special emphasis (31) _______ the developing countries. Nevertheless, the benefits of WHO's international health work are benefited by all countries, including the most developed ones. For example, all nations have benefited from their contributions to the WHO programs that led to the global (32) ______ of smallpox and to better and cheaper ways of controlling tuberculosis.

A. whom   

B. whose    

C. that        

D. which

* Đáp án

D

* Hướng dẫn giải

Đáp án D

Kiến thức về đại từ quan hệ

- sau dấu (,) không dùng that. Vì đại từ quan hệ thay cho từ immunization (miễn dịch) nên dùng which

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