exist
exist
If it weren’t for Rachel Carson，the environmental movement（）today。 A: should not exist B: might not exist C: should not have existed D: might not have exist
If it weren’t for Rachel Carson，the environmental movement（）today。 A: should not exist B: might not exist C: should not have existed D: might not have exist
Some people believe that there may not exist a stress gap between men and women. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L
Some people believe that there may not exist a stress gap between men and women. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L
Risk of collision may exist ______.
Risk of collision may exist ______.
Chinese dragons exist factually
Chinese dragons exist factually
The close link between age and stage may cease to exist in a multi-stage life. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M N: N
The close link between age and stage may cease to exist in a multi-stage life. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M N: N
What does the Kyoto Protocol exist as? （ ）
What does the Kyoto Protocol exist as? （ ）
Which of the following does not exist in universities?
Which of the following does not exist in universities?
able to exist together, live together
able to exist together, live together
At __________________ should exist correct mains voltage.
At __________________ should exist correct mains voltage.