—Have you got your exam papers?

   —Not yet. I guess they _____ at this moment.

   A. are being graded      B. are grading       C. have graded     D. have been graded

I don’t like drinking milk. Please _______coffee for milk.

A. replace       B. provide         C. serve          D. substitute

I stepped into my hotel room to a pleasant surprise. Lots of room surrounded an inviting king-size bed, with armchairs nearby resting against sliding glass doors that opened onto a private yard. A small dining table sat next to a kitchen with a refrigerator and coffee machine. "Wow," I thought to myself. "Nice place."

I love hotels. I love to enter a clean room, hang my clothes and gaze out the window, walk out in the morning and when I return, someone else will have made the bed. I like in-room dining and the way they greet you so professionally. "Nice to have you with us again, Mr. Goldsborough." Very cool.

The problem is that unless Alison travels with me, I never sleep well in hotels. I miss my family, even though Linus and Camille, at ages 4 and almost 2, find a way to interrupt even the best night's sleep at home.

I'm deeply troubled by the number of parents who wake up too late with the realization:

"My children grew up too fast. In the busy career and corporate rat race（剧烈竞争）, I missed their childhood.” What they fail to say but too often think causes me even more pain: "...and I barely even know them."

A hundred years from now, no one will remember the size of your bank account, the car you drove or the size of your house. The world might differ greatly however, based on your impact in the life of a small child. If you pay attention to your significant others, make the choice to put them first.

Think of one specific action that you can take, and take it. Then think of another one and take that, too. Challenge yourself to find new ways to express your appreciation and love on a daily basis. It will pay off ten-fold（十倍）at home.

We can infer from the passage that the author ____.

A. often goes out on business            B. didn’t get along well with his/her family

C. has not grown into an adult           D. comes from a rich family

According to the author, what is the most important for us is that ____.

A. we should often miss our family          B. we should do what we can to benefit our family

C. we should often stay with our family     D. we must always be ready to face the rat race

Through para.4 and para.5 what the author really means is that ____.

A. he hates his parents’ constantly blaming him/her

B. his parents don’t care much about his/her growth

C. many parents worry about their children’s future

D. many parents can’t realize their children not preparing for the fierce social rat race

Which of the fowling is the best title for this passage?

A. East, west, home is the best            B. Different generations, different views

C. Value of a person at home              D. Nothing Beats Family

I smell something ____ in the kitchen. Can I call you back in a minute?

A. burning        B. burnt        C. being burnt       D. to be burnt

The doctors has_________ a new idea on the treatment, which is well thought of by his companions.

A. come about   B. put forward    C. put away     D. regarded as

---He looks very hot and dry.

   --- So ________, if you had a temperature of 40℃.

A. will you             B. you will                       C. would you                     D. do you

He disappeared last month, _______ we have heard nothing of him.

A. when         B. after which          C. from which        D. since when

When you think about math, you probably don’t think about breaking the law, solving mysteries or finding criminals. But a mathematician in Maryland does, and he has come up with mathematical tools to help police find criminals.

People who solve crimes look for patterns that might reveal(揭示) the identity of the criminal. It’s long been believed, for example, that criminals will break the law closer to where they live, simply because it’s easier to get around in their own neighborhood. If police see a pattern of robberies in a certain area, they may look for a suspect(嫌疑犯) who lives near the crime scenes. So, the farther away from the area a crime takes place, the less likely it is that the same criminal did it.

But Mike O’Leary, a mathematician at Towson University in Maryland, says that this kind of approach may be too simple. He says that police may get better clues to the location of a criminal’s home base by combining these patterns with a city’s layout(布局) and historical crime records.

The records of past crimes contain geographical information and can reveal easy targets — that is, the kind of stores that might be less difficult to rob. Because these stores are along roads, the locations of past crimes contain information about where major streets and intersections are. O’Leary is writing a new computer program that will quickly provide this kind of information for a given city. His program also includes information about the people who live in the city, and information about how a criminal’s patterns change with age. It’s been shown, for example, that the younger the criminal, the closer to home the crime.

Other computer programmers have worked on similar software, but O’Leary’s uses more math. The mathematician plans to make his computer program available, free of charge, to police departments around the country.

The program is just one way to use math to fight crime. O’Leary says that criminology — the study of crime and criminals — contains a lot of good math problems. “I feel like I’m in a gold mine and I’m the only one who knows what gold looks like,” he says. “It’s a lot of fun.”

To find criminals, police usually ______.

A. focus on where crimes take place            B. seek help from local people

C. depend on new mathematical tools          D. check who are on the crime scene

O’Leary is writing a computer program that ______.

A. uses math to increase the speed of calculation

B. tells the identity of a criminal in a certain area

C. shows changes in criminals’ patterns

D. provides the crime records of a given city

By “I’m the only one who knows what gold looks like”, O’Leary means that he ______.

A. is better at finding gold than others

B. is the only one who uses math to make money

C. knows more criminals than other mathematicians

D. knows best how to use math to help solve crimes

What is the main idea of the text?

A. Criminals live near where crimes occur.

B. Math could help police find criminals.

C. Crime records could be used to fight crime.

D. Computer software works in preventing crimes.

The father as well as his three children ______ skating on the frozen river every Sunday afternoon in winter.

   A. is going                       B. go                        C. goes                    D. are going

I was out town at the time, so I don’t know exactly how it ____________________.

A. has happened                   B. happened                  C. happens             D. was happening