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we got to the cinema, the film
A. started
B. had started
C. starting
D. was starting
10. The heavy rain has caused
in many parts of the country.
C. snow
11. Many countries have sent humanitarian aid to the earthquake.....
A.wind
B.floods
D.drought
A.victims
B.soldiers
D.rescuers
C.elders
12. Water samples collected at these villages were seriously
A. contaminate
13. If we
with bacteria.
C. contaminated
A. contaminants
B. contamination
soon, the pollution will get much worse.
B.didn't act
A.don't act
14. People
A.left/had arrived
C.will not act
D.hadn't acted
the fooded villages when rescue workers
B. had left/ arrived
C.left/arrived
D. will left/ will arriv
15. Too much use of electric lights in cities may cause
A.air
pollution
D. light
B. noise
C.thermal
16. there was a lot of acid rain, many botanical species died last year.
A:Since
B:But
C:So
D:Although
on the Canadian national flag.
C. the rose
17. You can see
B. the red leaf
D. the oak tree
A. the maple leaf
18. The sight of too many advertising billboards, overhead poles and shop signs causes
pollution.
B.light
A.air
C. noise
D. visual
19. IfI
you, I
volunteer to clean the beach.
C. were/ would
by natural disasters every year.
A. am/ would
B. was/ will
D. am/ will
20. Thousands of people