To ensure a scientific development, Chinese museums not only need to improve their co
A.He was James Oliver's assistant.
B.He was born in Europe.
C.He was opposed to scientific agriculture.
D.He spent his own money on promoting his invention.
The job of the policemen in Olympic Games is to ensure the security of the athletes.
A.Y
B.N
C.NG
The author proposes ______ ways to ensure that the e-business dealing is secure.
A.2 B.3 C.4 D.5
Our duty is to ensure your security in public.
A.cleanness
B.secret
C.distance
D.safety
A.assure you
B.assure you of
C.ensure you of
D.insure you of `
A.How to make a powerful rocket engine.
B.How to ensure the safety of the crew.
C.How to choose qualified crewmen for the trip.
D.How to enable the spacecraft break free of gravity.
Our duty is to ensure your security in public.
A.cleaness
B.secret
C.distance
D.safety
A.though
B.therefore
C.accordingly
D.nevertheless