【单选题】Hair Detectives Scientists have found a way to use hair to figure out where a person is from and where that person has been. The finding could help solve crimes, among other useful applications. Water...
A.
Tap water reflects the concentrations of hydrogen and oxygen isotopes in different regions.
B.
Tap water is a kind of soft drink in the United States.
C.
Tap water contains unique proportions of isotopes of hydrogen and oxygen.
【单选题】Hair Detectives Scientists have found a way to use hair to figure out where a person is from and where that person has been. The finding could help solve crimes, among other useful applications. Water...
A.
Tap water reflects the concentrations of hydrogen and oxygen isotopes in different regions.
B.
Tap water is a kind of soft drink in the United States.
C.
Tap water contains unique proportions of isotopes of hydrogen and oxygen.
【简答题】示例: He / (Brazil)/the U.S A: Where does he come fro m? Does he come fro m Brazil ? B: No, he doesn ’ t come from Brazil . He come s fro m the U .S . A: What nationality is he? B: He ’ s American . 用 t...