Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each...

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.

Wallace (631) ______ a theory of evolution at the same time as Darwin, but his contribution to the science of evolution (632) ______ less celebrated. The Wallace line is a boundary proposed in 1859 by Wallace to separate the biogeographical realms of SE Asia and Australia. To the west of the Line are found organisms related to Asiatic species; to the east, (633) ______ of Asian and Australian origins exist.

Why is it that the island of Bali is home to Asian birds such as the weaver bird, and the neighboring island of Lombok, just 24 kilometres away across a narrow (634) ______, echoes to the scream of cockatoos. This extraordinary biological boundary is known today as the Wallace Line. Like his friendly rival and fellow Charles Darwin, Alfred Russel Wallace travelled the world collecting and studying species that were new to science. His legacy is the Wallace Line, a near-magical boundary which doesn’t simply explain where animals live today but (635) ______ their evolution. His idea has had a profound effect on all biological thinking to the present day.

Trả lời cho các câu 631, 632, 633, 634, 635 dưới đây:

Câu 631 :

A. proposed

B. proposes

C. proposing

D. have proposed