They took ____________ measures to prevent poisonous gases from escaping.
时间:2021-04-08 09:59来源:未知 作者:admin 点击:
次
11.They took ____________ measures to prevent poisonous gases from escaping.
A. efficient
B. beneficial
C. valid
D. effective
11. They took ____________ measures to prevent poisonous gases from escaping.
A. efficient
B. beneficial
C. valid
D. effective
(责任编辑:admin) |
要这答案加QQ:800020900 或加微信:vq800020900 获取更多答案 |
------分隔线----------------------------