题目内容
Only an hour ago ________ out why he was absent.
| A．did the teacher found | B．the teacher found |
| C．did the teacher find | D．had the teacher found |
C
解析试题分析：句意，只是在一小时之前，老师才知道了他缺席的原因。当only+状语位于句首时，句子要用部分倒装。所谓部分倒装就是把谓语动词的一部分，即助动词、情态动词、系动词移至主语的前面。因为前面有了助动词或情态动词，所以后边的动词要用原形，故选C。
考点：部分倒装
点评：英语句子中，当only所修饰的副词、介词短语或状语从句放在句首时，句子要用部分倒装。
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campus life, moved love story, horror, adventure and other elements. The story
begins with the main character, Isabella (Bella) Swan, moving from Phoenix, to
the small town of Forks, a dreary and rain-filled place, to live with her
father. She develops a relationship with fellow student, Edward Cullen, who
initially annoys her, but despite a rough beginning, they fall in love. After
witnessing some strange behavior from Edward, Bella eventually discovers that
he is a vampire, but despite the very real risk to her life, she cannot bear to
be apart from him. Eventually Bella is introduced to Edward’s vampire family,
not all of who welcome her with open arms, however, it is Edward’s family that
go to great lengths to save Bella when her life is threatened. 
B. With an absent father and a withdrawn and
depressed mother, 17 year-old Ree Dolly keeps her family together in a dirt
poor rural area. She's taken backwards however when the local Sheriff（县治安官） tells her that her father put up
their house for his bail（保释）and unless he shows up for
his trial in a week's time, they will lose it all. She knows her father is
involved in the local drug trade and manufactures crystal meth but anywhere she
goes the message is the same: stay out of it and stop poking your nose in other
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revealed.
C. Dom Cobb is a skilled thief, the absolute
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within the subconscious during the dream state, when the mind is at its most
vulnerable. Cobb's rare ability has made him a coveted（妄想的） player in this deceitful new
world of corporate espionage, but it has also made him an international
fugitive. Now Cobb is being offered a chance at redemption（赎）. One last job could give him his life back but only if he can
accomplish the impossible-inception. Instead of the perfect heist, Cobb and his
team of specialists have to pull off the reverse: their task is not to steal an
idea but to plant one. But no amount of careful planning or expertise can
prepare the team for the dangerous enemy that seems to predict their every
move...
D. Reflecting on her earlier life, she
observes that for most of it she was either with a man or in the process of
leaving one, and so in the first stages of her journey she experiments with
singleness. Not with solitude, exactly, since Liz is naturally sociable and
acquires friends easily. Back home in New York she has Delia, and in Rome a
Swedish woman named Sofi introduces her to an amicable（心平气和）group of Italians, including a
fellow whose last name is Spaghetti. While he is seen mainly in group shots,
his namesake food is filmed in loving close-ups. In keeping with the theme of
self-examination, Liz’s trip is confined to countries that begin with the letter
“I”. From the ruins of Italy, to an ashram in India, and then to
Indonesia...... 
E. John Crowley is a worried businessman and
father of two children stricken with Pompe disease, suffering of muscle
deterioration（恶化）with an
age expectancy of nine years. With critical birthdays looming on the horizon,
Crowley decides to take a chance and pursue research scientist Robert
Stonehill, a rebellious thinker in the field of Pompe with radical ideas on
enzyme therapy. Promising money he doesn't necessarily have, Crowley talks
Stonehill into a business venture, pushing the irascible（暴躁的） scientist into research while he worries about the cash flow. With
the clock ticking, Stonehill presents challenging theories, irritating the
interest of pharmaceutical giants, who demand results practically overnight.
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