China has been engaged in health diplomacy in Africa since ( )
A: 1968
B: 1963
C: 1967
D: 2019
A: 1968
B: 1963
C: 1967
D: 2019
举一反三
- She has been working in this factory ______. A: after 1968 B: in 1968 C: since 1968 D: for 1968
- ____ has Mr White been a member of Greener China since he ___to China?
- 世纪之交，中国外交空前活跃。 A: At the turn of the century, China's diplomacy is most active. B: The turn of the century finds China most active on the diplomatic arena. C: At the turn of the century, China's diplomacy has never been more active. D: At the turn of the century, China's diplomacy was unprecedentedly active.
- Many a young scientist ________ engaged in the research work. A: have B: has C: have been D: has been
- 3. Ever since it was launched in 1957, the Guangzhou/Canton Fair has acted only as an export platform for China, no import business has been involved in this Fair.