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【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.
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举一反三
【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】(A) Because people have destroyed animal habitats, they are now exposed to more diseases. (B) ___________ animal habitats, people are now exposed to more diseases.
A.
Destroyed
B.
Having destroyed
C.
Because destroying
【单选题】(A) Since people are able to travel very easily, they can spread diseases quickly. (B) _________ to travel very easily, people can spread diseases quickly.
A.
Since we are able
B.
Are able
C.
Being able
【单选题】(A) Because Jack always loved animals, he decided to study biologly. (B) _________ animals, Jack decided to study biology.
A.
Always loving
B.
Because loving
C.
Having always loved
【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
【单选题】(A) Since Maria needed vaccines to travel, she made an appointment with the doctor. (B) _________ vaccines to travel, Maria made an appointment with the doctor.
A.
Needed
B.
Needing
C.
Since she needed
【单选题】(A) Because we wanted to find jobs, we moved to a bigger city. (B) _________ to find jobs, we moved to a bigger city.
A.
Wanting
B.
Having wanting
C.
Wanted
相关题目：
【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】(A) Because people have destroyed animal habitats, they are now exposed to more diseases. (B) ___________ animal habitats, people are now exposed to more diseases.
A.
Destroyed
B.
Having destroyed
C.
Because destroying
【单选题】(A) Since people are able to travel very easily, they can spread diseases quickly. (B) _________ to travel very easily, people can spread diseases quickly.
A.
Since we are able
B.
Are able
C.
Being able
【单选题】(A) Because Jack always loved animals, he decided to study biologly. (B) _________ animals, Jack decided to study biology.
A.
Always loving
B.
Because loving
C.
Having always loved
【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
【单选题】(A) Since Maria needed vaccines to travel, she made an appointment with the doctor. (B) _________ vaccines to travel, Maria made an appointment with the doctor.
A.
Needed
B.
Needing
C.
Since she needed
【单选题】(A) Because we wanted to find jobs, we moved to a bigger city. (B) _________ to find jobs, we moved to a bigger city.
A.
Wanting
B.
Having wanting
C.
Wanted
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