Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Dolphins are a _______ species; it is illegal to harm or kill them.
 
A.protectively
B.protected
C.protection
D.protective

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Farmers were dumping or burying the _______ animals.
 
A.diseased
B.endangered
C.ill
D.sick

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Local people become ecotourism __________ , which brings them so much joy and benefits.
A.hosts
B.host
C.hostage
D.hostess

Nấm và động vật nguyên sinh sử dụng nguồn năng lượng chủ yếu là:
A.Ánh sáng và chất hữu cơ
B.Chất hữu cơ
C.Ánh sáng
D.Khí CO2

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Tourists can also take a quiet stroll ______ the forest or climb a watchtower for a spectacular panoramic view _____ the area.
A.in/for
B.through/for
C.in/of
D.through/of

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
At sunset, visitors climb high in the tree ______ all kinds of birds.
A.to view
B.to watch
C.to look
D.to view and to watch are correct

Vi sinh vật sử dụng chất hữu cơ làm nguồn cacbon là vi sinh vật
A.tự dưỡng
B.quang dưỡng
C.dị dưỡng
D.hoá dưỡng

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Work on the production line is monotonous and lacks _______.
A.variable
B.various
C.variety
D.varied

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Ecotourism in Cambodia helps to _______ wildlife, the natural environment and local cultures.
A.store
B.endanger
C.protect
D.risk

Các muối phản ứng được với dung dịch NaOH là
A. $ KCl,NaN{{O}_{3}} $ .
B. $ BaC{{l}_{2}},FeS{{O}_{4}} $ .
C. $ MgC{{l}_{2}},CuS{{O}_{4}} $ .
D. $ {{K}_{2}}S{{O}_{4}},ZnC{{l}_{2}} $