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Itfiveortenyearsbeforethenewmedicineistestedonhumanbeings.[]A.willtakeB.tookC.takesD.hastaken
题目详情
| It_________five or ten years before the new medicine is tested on human beings. |
| [ ] |
| A. will take B. took C. takes D. has taken |
| It_________five or ten years before the new medicine is tested on human beings. |
| [ ] |
| A. will take B. took C. takes D. has taken |
[ ]
B. took
C. takes
D. has taken
[ ]
[ ]
[ ]
B. took
C. takes
D. has taken
B. took
C. takes
D. has taken
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A A A A
| A |
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