45．_____ you study hard can you pass the exam．

A．Only if　　　　 B．If only　　　　　 C．so long as　　　　　 D．as soon as

44．Advertisers ______ persuade us to buy their goods by ______ our desires to save money．

A．intend to; appealing to　　　 　　 B．attain to; appealing to

C．tend to; affecting　　　　　 　 D．intend to; fitting in

43．Which of the following sentences is wrong?

A．Keeping plants alive during long land or sea voyages was an enormous challenge．

B．To keep plants alive during long land or sea voyages was an enormous challenge．

C．How to keep plants alive during long land or sea voyages was an enormous challenge．

D．Keep plants alive during long land or sea voyages was an enormous challenge．

42．Sir Joseph Banks was very famous British plant collector, who _____ James Cook ____ his first voyage from England to Oceania．

A．accompanied; on　　　 　　　　 B．accompanied with; in

C．accomplished; on　　　　 　　　 D．postponed; in

41．Every time Ashrita tries to break a record, he reaches a point ____ he feels he cannot physically do anymore．

A．when　　　 B．where　　　　　　 C．that　　　　　　 D．which

40．Find out one correct sentence out of the following four:

A．Think about the fine neck adjustments need to keep a full bottle of milk on your head．

B．While Ashrita makes standing on top of the big ball look easy, it is not．

C．He believes that there is no limit of people’s physical abilities．

D．Could you begin by telling what you were doing at 9:30 last Wednesday evening?

39． After five months of walking, they finally reached______ was referred to as the Great Lake．

A．that　　　　 B．which　　　　 C．where　　　　　　 D．what

38．The scientific dictionary is ____ 500 yuan, ____is really _____for you youth．

A．worth; which; worth reading　　　　　 B．worthy; what; worthy of reading

C．worthy of; it; worthy reading　　　　　 D．worthwhile; which; worthy to be read

37．It is the ability to do the job _____ accounts not where you come from or what you are．

A．which　　　　 B．what　　　　　 C．that　　　　 D．it