1.  Fill in each numbered blank with one suitable word.

Nowadays people are more aware that wildlife all over the world is in (21) _________  . Many species of animals are threatened, (22) __________ could easily become extinct if we don’t make an effort to protect them. There are many reasons for this. In some cases, animals are hunted (23) _________ their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught alive, and sold as pets. For many animals and birds, the problem is that their habitat – the place where they live – is disappearing. More (24) _________is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals make the environment (25) __________and harm the wildlife.

nb21. A. danger        B. dangerous                         C. dangerously                      D. endanger

th22. A. but               B. and                                     C. because                             D. so

nb23. A. for               B. of                                        C. in                                        D. on

nb24. A. house          B. garden                               C. area                                    D. land

vd25. A. has              B. are                                      C. pollutes                             D. polluted

Choose the letter A, B, C or D to indicate the word which has the CLOSEST meaning with the underlined word.

20.The air is naturally polluted by foreign matters such as plant pollens and dust.

A. contaminated                   B. filled                      C. purified                 D. concentrated

Circle the letter A, B, C or D to indicate the best answer to complete the sentences

13. Typhoon Haiyan caused damage, and __________  of life became great in the Philippines.

A. lose                                    B. loss                                    C. losing                     D. loses

14. Magma is the liquid rock inside a volcano, but lava is magma that flows__________  a volcano.

A. at                                        B. into                        C. out of                     D. out

15. Before she (watch) __________TV, she did homework.

A. watched                            B. watched                 C. had watched         D. was watching

16. Thousands of people ___________ by natural disasters every year.

A. affect                                 B. affected                 C. are affected          D. are affecting        

17. The team’s success was largely ___________ her efforts.

A. in spite of                         B. due to                    C. because                D. although

18. Hundreds of people made ___________ after the flood.

A. homeless                           B. endless                  C. careless                 D. helpless

19. The flight number 781 to Melbourne ___________ at 9 o’clock tomorrow morning. 

A. will arrive                         B. is arriving                         C. has arrived            D. arrives       

Circle the letter A, B, C or D to indicate the words stressed differently from the others

12. A. adoptee                       B. historic                  C. examinee              D. employee

Circle the letter A, B, C or D to indicate the underlined parts pronounced differently from the others

11. A. thermal                       B. earth                      C. though                   D. thorough

giúp mik với

3, Em hãy đề ra các biện pháp bảo vệ hệ hô hấp tránh các tác nhân có hại?

Trình bày được khái niệm miễn dịch? Các loại miễn dịch? Vì sao người có khả năng miễn dịch sau khi được tiêm vắcxin ?