Chọn từ có trọng âm chính khác với các từ còn lại:  

Without(A) the particularly(B) habitat, the species could(C) not survive(D).

Although(A) species evolve differently, most of them adapt(B) to a specific habitat or environment that(C) best meets their survive(D) needs.

Such(A) human activities as pollution, drainage(B) of wetlands, cutting and clearing(C) of forests, urbanization, and road and dam construction has destroyed(D) or seriously damaged available habitats.

Habitat fragmentation (A) have caused (B) plant and animal species (C) in the remaining islands of habitat to losecontact with (D) others of their own kind.

Chọn đáp án đúng để hoàn thành câu: 

You _______ be rich to be a success. Some of the most successful people I knowhaven't got a penny to their name.

hoàn thành câu: 

Although we are aware _______ the importance of environment, we still exploitit.   

Chọn đáp án đúng để hoàn thành câu: 

If I had gone white water rafting with my friends, I _______ down the ColoradoRiver right now.