38. The police put the blame (_____)_ the accident (_____)_ the driver of the truck.

34. Details of the underground trade were (_____) by the local newspaper.

A. 　 revealed

B. 　 exposed

C. 　 discovered

D. 　 found

3. Passage Eight Wisdom teeth are normally the last teeth to appear. This usually happens when people are in their late teen years or early twenties—in other words， when they are older and wiser. Wisdom teeth are chewing teeth， at the back of the mouth. They can grow into place normally and never cause a problem. But often there is not enough room for them in the mouth. They might crowd other teeth. Sometimes they even push sideways through the gums (牙床). An impacted wisdom tooth is one that fails to completely rise through the gum—the term is 【erupt】. Wisdom teeth that only partially erupt can leave space for bacteria to enter around the tooth. Infection is a risk in these cases. Wisdom teeth that are not well in place and become impacted are often removed. People should have the placement of their wisdom teeth examined between the ages of sixteen and twenty. X-rays can show wisdom teeth that are below the gums. The American Dental Association says removal is generally advised when wisdom teeth only partly break through the gums. Removal is also advised if there is a chance that poorly placed wisdom teeth will damage other teeth. And removal is called for in cases where fluid collects around a wisdom tooth that is partly or fully below the gum. But why do we have wisdom teeth if we often need to get them removed? One theory has to do with our diets. Scientists say the diet of prehistoric humans probably required more chewing teeth. Life was probably alittle rougher on the teeth back then， too. So it was good to have extras. The American Association of Oral and Maxillofacial (上颌面的) Surgeons says young adults are the best candidates for wisdom teeth removal. The group says older patients may be at greater risk for disease in the tissue surrounding the teeth. After surgery， there can be swelling of the gums and face and some pain. Both can be treated with cold wraps and medication (药物治疗). When a wisdom tooth fails to rise completely， ( ) .

A. it may need more time to grow

B. it may cause swelling in the face

C. it may cause infection

D. it may be left unnoticed

32. Had he worked harder, he (_____)_ the exams.

A. 　 must have got through

B. 　 would have got through

C. 　 permitted are freshmen

D. 　 are permitted freshmen

2. . Passage Twenty All friendships require a certain amount of chemistry. But when two people of the opposite sex become friends， sometimes those friendly feelings can start to resemble something more like sexual tension. Male-female friendships can be an emotional minefield of hidden desires. Does this mean you secretly want to jump into bed with all of your friends? Of course not. But do you ever wonder how many of them might be interested if the opportunity presented itself? Maybe you and your platonic (柏拉图式的) friendship are just a bad breakup and a bottle of wine away from crossing that boundary and hooking up (结合). So can two people of the opposite sex ever really be “just friends?” The Hollywood answer to this age-old question is a decisive HELL NO. On screen， male-female friendships always turn into something more. Harry and Sally， Chandler and Monica， Jim and Pam … … Do I need to go on? Even the characters in Just Friends wind up becoming much more than the film’s definitive title suggests. Cinematic stories dictate that when reasonably attractive men and women befriend one another， they are always on the road to romance， whether they realize it or not. But how much truth is there to this friendship as foreplay theory? It is not a whole lot. Real life isn’t a romantic comedy. Men and women go to school together， work together and hang out in plenty of platonic settings without falling hopelessly in love with one another. Last year， a close female friend of mine moved in with a new male roommate. My immediate reaction was， “You two are definitely going to sleep together.” It seemed to me that a single man and woman living under the same roof would inevitably end up doing it. Much to my surprise， the roommate romance never happened. Almost one year later， the two of them have never even come close to seeing each other naked. Instead， their way of life has come to resemble a sexless marriage. They cook for each other， argue over domestic chores and insist that they never， ever think about each other “that way.” According to the last sentence of the 2nd paragraph， under the right opportunity， platonic friendship can easily ( ) .

A. cross the ethnic boundary

B. turn into bad relationship

C. turn into romance

D. be broken up

5. Passage Twenty-Seven Out of all the students who enroll in a massive open online course 【MOOC】， only about 5 percent complete the course and receive a certificate of accomplishment. This statistic is often cited as evidence that MOOCs are fatally flawed (有缺陷的) and offer little educational value to most students. Yet more than 80 percent of students who fill out a post-course survey say they met their primary objective. How do we look at these two facts? We’re used to focusing on completion rates in higher education， but they’re not the only—or even the most meaningful—indicator of engagement in open online courses. With no cost to enroll， no punishment for dropping out， and little reward for actually earning a certificate， MOOCs are fundamentally different from traditional classes—and students use them in fundamentally different ways. Data from more than 1.8 million students enrolled in 36 MOOCs offered by the University of Pennsylvania show that students treat MOOCs like a buffet (自助餐)， sampling the material according to their interests and career goals. Some are curious about the subject matter and just watch one or two video lectures; others use the discussion forums to connect with their intellectual peers around the world. Of all enrolled students， nearly 60 percent watch at least one video， complete at least one assignment， or post at least once in a forum. So focusing on the tiny fraction of students who complete a MOOC is misguided. The more important number is the 60 percent engagement rate. Students may not finish a MOOC with a certificate of accomplishment， but the courses nonetheless meet the educational goals of millions. What is the author’s attitude toward MOOCs?

A. Critical.

B. Supportive.

C. Indifferent.

D. Neutral.

38. In order not to be disturbed, I spent three hours (_____)_ in my study.

A. 　locking

B. 　locked

C. 　to lock

D. 　being locked

33. The Browns (_____)_ here, but not any more.

A. 　 were used to living

B. 　 had lived

C. 　 used to live

D. 　 had been living

4. Passage Twenty-Seven Out of all the students who enroll in a massive open online course 【MOOC】， only about 5 percent complete the course and receive a certificate of accomplishment. This statistic is often cited as evidence that MOOCs are fatally flawed (有缺陷的) and offer little educational value to most students. Yet more than 80 percent of students who fill out a post-course survey say they met their primary objective. How do we look at these two facts? We’re used to focusing on completion rates in higher education， but they’re not the only—or even the most meaningful—indicator of engagement in open online courses. With no cost to enroll， no punishment for dropping out， and little reward for actually earning a certificate， MOOCs are fundamentally different from traditional classes—and students use them in fundamentally different ways. Data from more than 1.8 million students enrolled in 36 MOOCs offered by the University of Pennsylvania show that students treat MOOCs like a buffet (自助餐)， sampling the material according to their interests and career goals. Some are curious about the subject matter and just watch one or two video lectures; others use the discussion forums to connect with their intellectual peers around the world. Of all enrolled students， nearly 60 percent watch at least one video， complete at least one assignment， or post at least once in a forum. So focusing on the tiny fraction of students who complete a MOOC is misguided. The more important number is the 60 percent engagement rate. Students may not finish a MOOC with a certificate of accomplishment， but the courses nonetheless meet the educational goals of millions. The sentence “students treat MOOCs as a buffet” (Para. 3) ( ) .

A. emphasizes the core value of MOOCs

B. demonstrates the daily operation of MOOCs

C. indicates students are free to choose MOOC resources

D. explains what students learn from MOOC courses

48. In computer programming, this model is ()to any of the others they have in the department.

A. 　 the most superior

B. 　 superior the most

C. 　 more superior

D. 　 superior

33. The population of China is larger than (_____)_ of Japan.

A. 　 one

B. 　 these

C. 　 those

D. 　 that