题目内容：

Rather than rolling your eyes when it’s your turn to bow your head and give thanks, try being grateful. The result just might be good for you, from improving your feeling to your relationships. If you don’t want to voice your gratitude, writing a letter may work, according to various studies by Steve Toepfer of Kent State University and his colleagues.

Toepfer and his colleagues had 219 students with an average age of 25 fill out questionnaires（问卷）to measure their happiness. They returned to the lab to fill out the survey three more times, with each visit about a week apart. Some of the students wrote a letter of gratitude each time they returned to the lab, while the control group didn’t write about being thankful.

“The letter writers were instructed to write a letter of gratitude to anyone they wanted, however, the letter couldn’t be a‘thank you’note for a gift,” Toepfer said. “The participants had to write about something that was important to them.”

The results showed that their levels of happiness and life satisfaction improved after each letter they wrote. In addition, depressive symptoms decreased over time with the letter writing.

Gratitude doesn’t just cheer you up—it can improve your health and energy levels as well. A 2007 study conducted by researchers found that organ-transplant(器官移植) receivers who kept “gratitude journals” listing five things or people that they were grateful for each day scored better on measures of general health, and mental health than those who only made routine notes about their days.

A successful relationship may depend on your gratitude. Research reported in 2011 looking at more than 65 couples who were in satisfying relationships showed that each couple’s relationship quality corresponded with one partner’s feelings of gratitude. Researchers show that one partner expressed feelings of gratitude; both partners experienced a positive emotional response.

1.According to the passage, if you want to get along well with others, you’d better________.

A. write letters to them frequently

B. pay more attention to their feelings

C. show your thanks from time to time

D. take care of them when they are in need

2.The underlined phrase “the control group” in Paragraph 2 refers to the group that _________.

A. is cold to others’ kindness

B. is not good at writing letters

C. is unwilling to express their feelings

D. is not allowed to write thank-you letters

3.From the passage we can infer that people who often show gratitude are less likely to be __________.

A. nervous    B. careless

C. depressed    D. optimistic

4.From the passage, we can learn that _________.

A. it’s better to write a thank-you letter than to say gratitude with words

B. the results of different ways of showing gratitude are all the same

C. the good relationship of each couple is based on trust

D. gratitude is beneficial to health

5.What would be the best title for the passage?

A. Why you should be grateful

B. Ways of changing your feeling

C. How to show your gratitude to others

D. Thank-you letters’ role to human relations