[单选题]
The three vowels mentioned in this article are all Finnish sounds.
A、Right
B、Wrong
C、Not mentioned

[单选题]
doing
A、handling
B、solving
C、dealing

[单选题]
Air transport companies use different planes__________.
A、in the development of air transportation
B、the earliest passenger flights were successfully operated
C、to make travel easy and pleasant for the passengers
D、to provide different services
E、the shortage of qualified pilots

F traveling by air was very cheap

[单选题]
请在第__61__处填上正确答案。
A、cool
B、nuclear
C、star
D、cold

[单选题]
Yuthachai，the inventor of biodiesel，is currently the general manager of a US Thailand ioint venture in Bangkok．
A、Right
B、Wrong
C、Not mentioned

[单选题]
请在第__62__处填上正确答案。
A、above
B、to
C、at
D、up