To prevent the spread of the epidemic, the public health organization carries out frequent
A.inspection
B.investigation
C.observation
D.examination
A.inspection
B.investigation
C.observation
D.examination
A.prevent…from spreading
B.prevent…to spread
C.protect…from spreading
D.protect…to spread
A. to prevent
B. preventing
C. prevent
A.How to cover the cost of their legal fees.
B.How to prevent Nikki's sisters from using websites.
C.How to prevent the remaining photos on the Web from spreading.
D.How to prevent this from happening to anybody else.
A series of measures______(已经被采用)to prevent air pollution.
A.Y
B.N
C.NG
be worn.
raft.
A.unauthorized
B.unactivated
C.unscreened
D.Unscheduled
We must express our views clearly to prevent media ______ and public confusion.
A.disturbance
B.setback
C.controversy
D.distortion
A.prevent
B.anticipate
C.discourage
D.prompt