—The hillside village remains primitive and unspoiled.
—That explains ______ people desire to explore such a remote place.
A.how B.where C.when D.why
In case of fire, we must follow the emergency ______ to ensure our safety.
A.predictions B.proportions C.procedures D.pressures
______ most of us are satisfied with the nutrients we’re getting from our diets, they are actually far from enough.
A.While B.If C.Since D.Before
The company has ______ the gas supply temporarily to repair the damaged gas pipe.
A.cut in B.cut up C.cut off D.cut out
China’s economic progress has been made ______ stronger efforts in energy saving and environmental protection.
A.in response to B.in parallel with
C.in regard to D.in conflict with
The researchers ______ till midnight every day since the outbreak of the disease to find an effective cure.
A.work B.will work
C.are working D.have been working
