7. The lack of eco-friendly habits among the public is thought to be a major _____ of global climate change.

A. result

B. cause

C. warning

D. reflection

8. Always remember to put such dangerous things as knives out of children’s ______.

A. touch

B. sight

C. reach

D. distance

9. Those who suffer from headache will find they get ______ from this medicine.

A. relief

B. safety

C. defense

D. shelter

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