The research is so designed that once ______ nothing can be done to change it. [
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The research is so designed that once ______ nothing can be done to change it. |
[ ] |
A. begins B. having begun C. beginning D. begun |
答案
D |
举一反三
_____ time, he"ll make a first-class tennis player. |
[ ] |
A. Having given B. To give C. Giving D. Given |
Don"t use words, expressions, or phrases ______ only to people with specific knowledge. |
[ ] |
A. being known B. having been known C. to be known D. known |
She remained _____ for a while after the movie ended, which made others _____. |
[ ] |
A. sitting; puzzling B. sat; puzzled C. seated; puzzled D. seated; puzzling |
If _____ unsolved, this may lead to more serious problems. |
A. making B. remained C. left D. taking |
_____ from other countries, sand painting is now being recognized in China for its uniqueness and creativity. |
[ ] |
A. Being imported B. To import C. Imported D. Importing |
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