We know for sure that colonization began at the end of the 15^th century.(  )

• A、Right

• B、Wrong

• C、Not mentioned

The following are all mentioned as reasons why the airlines are having a hard time EXCEPT that     .(  )

• A、the tourist industry is experiencing an all-time low
• B、there is no increase in the number of passengers
• C、there are more seats on the planes than needed
• D、the competition between airlines is strong

A. goal

B. hug

C. entered

D. run

E. promise

F. true

G. proud

H. rest

I. get through

J. encouraging

K. testing

L. preparing