单选题Williams是某公司的簿记员，工资为每年$35000。Williams决定辞掉工作，全职参加MBA项目。假设Williams夏季并未工作且没有任何兼职。他的学费、书费、生活费用及其他费用共计一年$15000。基于以上信息，Williams参加MBA学习，一年的经济成本共计为（）A $50000B $35000C $15000D $60000

"May I speak to your manager Mr. Williams at five o′clock tonight?"
"I′m sorry. Mr. Williams ___________ to a conference long before then."

A.have gone
B.would have gone
C.had gone
D.will have gone

Passage Five
Would you like to spend all evening reading a lovely story with beautifulillustrations and make$35,000 atthe same time?Millions of people all over the world tried to do just that.Only one succeeded.The book is called Masquerade,and was written by Britishpainter Kit Williams.Within its pages are clues to the location of a goldenjewel,and whoever figured out the clues could find and keep the treasure.
Some years ago,Williams was asked to write a children′s book.Wanting to do something no one elsehad done before,he decided to bury a golden treasure and tell where it was inthe book.He be-gan painting without a clear idea of what the story would beabout,where he would bury the treasure,or even what the treasure would be.Ashe painted,he decided that in the story a hare,or rabbit,would travel throughearth,air,fire and water to deliver a gift from the moon to the sun.Afterthree years,he finished the paintings and then wrote the story.The treasurebecame an 18-
carat gold hare,adorned with preciousstones,and it was made by Kit Williams himself.This beautiful jewel,wortharound$35,000,depending on gold prices,was buried somewhere in Britain,freeto anyone who could decipher the clues.Williams′s book kept people of all agesamused trying to solve the mystery of Masquerade.
The rabbit was finallyfound in the spring of 1982,by a 48-year-old design engineer.It was buried ina park about thirty-five miles from London.

We can conclude from the passage that___.

A.the clues in Masquerade are easy todecipher
B.Kit Williams has many artistic talents
C.many people bury.treasures in Britain
D.Kit Williams said he would pay$35,000to whoever found the treasure