我国现行汽车维修制度指导思想为()、()。
参考答案:强制维护;视情修理
The Louvre is the most famous French museum where many priceless art works are ____ , including the Mona Lisa.[ ]
A.covered
B. adopted
C. lain
D. housed
The scientist ___ his research for lack of fund.
A.deserted
B.canceled
C.abandoned
D.quilted