Water covers 71% of Earth’s surface yet only 2% of it is_____ as a source of fresh water.
A.invaluable B.accessible C.valuable D.reasonable
Snaking through the deserts, the Nile would flood almost _____ each year in June.
A.normally B.variably C.invariably D.increasingly
Researchers found that they could use microbial fingerprints to_____ the person who had used a computer keyboard even after the keyboard sat _____ for two weeks at room temperature.
A.identify, untouched B.recognize, touching
C.distinguish, untouched D.acknowledge, touching
The world’s first_____ egg went on sale in a California Whole Foods Wednesday, marking the potential start of an_____ shift in the reliance on corn and soy.
A.plant-based artificial, industry-wide B.artificial plant-basing, industry-wide
C.artificial plant-based, industry-widely D.plant-basing artificial, industry-widely
The only way to _____ the uncomfortable feeling of financial pressure is to take some kind of positive action.
A.relieve yourself from B.relieve yourself of
C.relief yourself D.relief yourself of
A rift valley_____ an area _____ there is increased volcanic activity and thinned planetary crust.
A.is composed of, where B.consists of, which
C.made up of, where D.compose, when
