11.    The crash resulted ________ the death of 10 passengers
A, to                               B, at                                  C, into                                    D, in
12.    The primary causes of species extinction result _________habitat destruction, commercial exploitation and pollution.
A. in                                       B. of                                C. for                                      D. from
13.    The government ___________ the flood victims with food, clothes and money.
A, gave    B, provided    C, offered    D, presented
14.    Some animals go ___________ because climate where they live changes
A, extinct    B, extinction    C, extinctive    D, dead
15.    An __________ species is a species which has been categorized as very likely to become extinct.
A, endangered    B, endanger    C, dangerous    D, danger
16.    Limiting the global temperature rise requires __________ global CO2 emissions
A. reduce    B. to reduce    C. reducing    D. reduced
17.    The tiger is ___________ of extinction. It is difficult to find them in the wild. 
A. on the wing     B. on the rocks     C. on the verge     D. on the ground
18.    Nowadays, people are searching for more ___________ materials to build their houses. 
A. environment-friendly        B. environmentally-friendly 
C. environmental-friendly        D. environmental-friend 
19.    There are lots of things we can all do to ____ the environment.
A. enhance    B. protect    C. make    D. build
20.    Make sure your car runs on unleaded petrol and your home uses sources of ____ energy. 
A. recycling     B. reused     C. renewable     D. recyclable