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【单选题】

Which information goes in (D)?

A.
Bats are a source of SARS.
B.
Only 1 percent of plants have been tested as possible drugs.
C.
Rain forests cover 6 percent of the earth and provide 20 percent of the oxygen.
D.
pr the spread of diseases, protect possible sources of medicine, and conserve the planet's oxygen
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参考解析:
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举一反三

【单选题】Which information goes in (A)?

A.
Bats are a source of SARS.
B.
Only 1 percent of plants have been tested as possible drugs.
C.
Rain forests are the "lungs" of the planet, helping to keep our air healthy.
D.
Rain forests cover 6 percent of the earth and provide 20 percent of the oxygen.

【单选题】Which information goes in (B)?

A.
Rain forests are the "lungs" of the planet, helping to keep our air healthy.
B.
Rain forests cover 6 percent of the earth and provide 20 percent of the oxygen.
C.
Only 1 percent of plants have been tested as possible drugs.
D.
Concluding ideas

【单选题】Which information goes in (E)?

A.
Only 1 percent of plants have been tested as possible drugs.
B.
prevent the spread of diseases, protect possible sources of medicine, and conserve the planet's oxygen
C.
Rain forests are the "lungs" of the planet, helping to keep our air healthy.
D.
Concluding ideas

【单选题】Which information goes in (F)?

A.
Rain forests cover 6 percent of the earth and provide 20 percent of the oxygen.
B.
Bats are a source of SARS.
C.
prevent the spread of diseases, protect possible sources of medicine, and conserve the planet's oxygen
D.
Concluding ideas

【单选题】Which information goes in (C)?

A.
Bats are a source of SARS.
B.
Rain forests are the "lungs" of the planet, helping to keep our air healthy.
C.
prevent the spread of diseases, protect possible sources of medicine, and conserve the planet's oxygen
D.
Concluding ideas