【C5】A．originsB．sourcesC．basesD．discoveries

A．sourceB．sourcesC．resourceD．resources

【C10】A．emergenceB．innovationC．extinctionD．discovery

【C5】A．originsB．originalsC．discoveriesD．resources

【C2】A．originsB．originalsC．sourcesD．resources

Britains mineral______include oil, coal and gas deposits.A．originsB．sourcesC．resourcesD．as

【C7】A．reproductionB．identificationC．demonstrationD．discovery