单项选择 适中0.65 引用1 组卷264
In order to ________ history, the government established a committee to take responsibility for the protection of the ancient city.
| A．release | B．pioneer | C．witness | D．preserve |
21-22高一下·北京·期中
类题推荐
As a ____in the field of genetic engineering, he is given all the credit for all the extra work.
| A．pilot | B．pepper | C．pioneer | D．photographer |
The surgeons in a London hospital __________ a new technique to help replace the injured part of the body with an artificial one. It’s a great breakthrough in medicine.
| A．accessed | B．monitored | C．pioneered | D．equipped |
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