摘要： A study in the USA in 1977 showed that the chemical ASA in aspirin could prevent a stroke. A. carrying out B. carried out C. working out D. worked out
网址：http://m.1010jiajiao.com/timu3_id_3065531[举报]
A study ________ in the USA in 1977 showed that the chemical ASA in aspirin could prevent a stroke.
| A．carrying out | B． carried out | C．working out | D．worked out |
A study ________ in the USA in 1977 showed that the chemical ASA in aspirin could prevent a stroke.
|
A．carrying out |
B． carried out |
C．working out |
D．worked out |
查看习题详情和答案>>