1 . ________ you can sleep well, you will lose the ability to focus, plan and stay motivated after one or two nights.

A．Unless

B．Once

C．If

D．When

2 . EBay and Amazon are popular websites ________ people can sell goods to each other.

A．when

B．which

C．where

D．whose

3 . If you always compare yourself ________ others, you won’t feel happy.

A．in

B．by

C．of

D．with

4 . You may not know a lot of people when you start high school. Maybe your friends from middle school are going to a different high school. Even if you know other freshmen, you still feel nervous that you don’t know any upper-class men. How are you going to make friends among this sea of unknown faces?

Most high schools hold a freshman orientation before school actually starts. These are helpful not only because you learn your way around the building and get to meet some of your teachers, but you also get to meet fellow freshmen. That way, when you show up on your first day of school, you may already recognize a few familiar faces.

When you talk to people at orientation, you’ll probably find that a lot of them are feeling just like you are. They’re all new to the school and don’t know what to expect. Talking about a common concern with your classmates can help you develop friendships.

The work in high school is something freshmen are probably worried about. The work in high school builds on what you learned in middle school, giving you a more advanced knowledge of many subjects. So you may find you have more work to do or that it’s a bit more challenging. If you ever find your work too difficult, teachers can give you extra help.

High school also has more after-school activities than middle school did, such as clubs, music and theater groups and sports teams. This is a good time to explore your interests and try new things.

Middle school taught you the basis of academics, time management, and social skills while providing you with a little extra support and guidance. High school gives you the chance to learn how to be more independent and responsible.

1. According to the passage, when freshmen come to the school on the first day, they usually feel ________.

A．proud

B．frightened

C．excited

D．nervous

2. What can students do at orientation?

A．They can meet familiar faces from middle school.

B．They will attend lectures delivered by their teachers.

C．They can exchange their worries about high school.

D．They will be led to have a tour around the campus.

3. What are freshmen probably worried about?

A．The learning task.	B．The ability to make friends.
C．The training in the freshman orientation.	D．The relationship with teachers.

4. After-school activities mainly help students ________.

A．build up healthy bodies	B．develop their interests
C．develop friendships	D．improve their learning ability

5. The last paragraph is mainly about ________.

A．what you’ll learn in high school

B．what you leaned in middle school

C．the difference between middle school and high school

D．the importance of being more independent and responsible

5 . The program hopes to persuade the young people ________ smoking.

A．not to try

B．don’t try

C．not trying

D．aren’t trying

7 . It is reported that more than 70% of water ________ in the past five years.

A．was polluted	B．were polluted
C．have been polluted	D．has been polluted

9 . The _______ on her face told me that she was in a blue mood.

A．appearance

B．impression

C．attitude

D．expression

10 . In the Hollywood movie The Martian, actor Matt Damon plays an astronaut who grows food on Mars (火星) to survive alone on the red planet.

After seeing the movie, Washington State University physicist Michael Allen and University of Idaho food scientist Helen Joyner decided to carry out a case study helping students figure out how to farm on Mars. In the case study, students had to imagine they were mining on Mars and decide how to feed themselves there before starting on the journey. They got advice from Allen and Joyner on how to select crops and take the challenges of growing crops over long periods on Mars. Students used a scoring system to select three foods to plant on Mars.

Allen found the results impressive: among 30 students, “no two people have ever gotten the same answer”, he said.

Human travelers to Mars will likely have to make use of resources on the planet rather than take everything they need with them on a spaceship. This means farming their own food on another planet, one that has a very different ecosystem (生态系统) from Earth’s.

One challenge for those who would like to live on Mars is the fact that there can be no farming tools. Like real astronauts, students taking part in the study cannot take farming tools with them. As Joyner put it to his student astronauts, “You are starting with nothing.” Besides, students also have to deal with a very limited choice of diet. “If you had to eat a single food for the rest of your life, could you do it?” Joyner asked.

But Allen believes the case study is about more than farming and eating on the Red Planet. “I’m not teaching about growing food on Mars,” Allen said, “I’m teaching about living with choices. I’m teaching about problem solving.”

1. What made Michael Allen and Helen Joyner carry out the case study?

A．A trip.

B．A book.

C．A movie.

D．A lecture.

2. In the case study, students have to ______.

A．start with everything	B．try different tools
C．watch the movie	D．select three foods

3. What might be the challenge for people living on Mars?

A．They have a limited choice of diet.	B．They have a lot of farming tools.
C．They have to take part in the study.	D．They have to select crops on Mars.

4. Michael Allen thinks that the case study teaches the students ______.

A．how to look for foods on Mars	B．to know more about Earth
C．how to solve problems	D．to learn about gardening

5. The passage is mainly about ______.

A．a research on how to farm on Mars	B．a Hollywood movie The Martian
C．how to survive alone on Earth	D．how to design a scoring system