Since October 2008, there ______ a rapid fall in the volume of exports in this country.
A: is
B: was
C: should be
D: has been
A: is
B: was
C: should be
D: has been
举一反三
- When a country's currency depreciates against the currencies of major trading partners A: the country's exports tend to rise and imports fall. B: the country's exports tend to fall and imports rise. C: the country's exports tend to rise and imports rise. D: the country's exports tend to fall and imports fall.
- Never before ______ as united as it is today. A: our country has been B: has our country been C: has been our country D: have our country been
- Since they _____ to the destination country, they are called immigrants in the new country.
- The economy as a whole has been declining in that country for years, ______ the computer industry has expanded steadily. A: (A) so B: (B) yet C: (C) since D: (D) unless
- Since （ ）, the Dragon Boat Festival has been celebrated as public holiday in China. A: 2006 B: 2007 C: 2008 D: 2009