题目内容：

Be careful on April 1st! When your classmate says “We will be free this afternoon!”, it may not be true. And if you find your clock is an hour slow, this may be a joke (笑话).

April Fool’s Day is a special festival. On this day people play harmless jokes on others and then shout, “Happy April Fool’s Day!” This day is just for fun, so people don’ t buy gifts or get the day off work or school.

April Fool’s Day started in France in the 16th century (世纪). At that time, April Fool’s Day was between March 25th and April 1st.

Different countries celebrate April Fool’s Day in different ways. In France, people fool their friends by sticking (粘住) paper fish on their friends’ backs. When some people find out this joke, they shout, “April Fish!” In England, it is bad luck to play jokes on someone after midday (中午). Americans play small tricks on friends.

1.The first paragraph (段落) tells us that ________ on April 1st.

A. we should be careful with others’ words

B. we should not be late for school

C. we should treat everything as a joke

D. we should have a half-day off work or school

2.What does the underlined word “harmless” mean in Chinese?

A. 不光彩的    B. 无恶意的    C. 无理由的    D. 不实际的

3.In the 16th century, people celebrated April Fool’s Day probably (或许) on______.

A. January 1st    B. February 26th    C. April 3rd    D. March 28th

4.On April Fool’s Day, people ________.

A. buy gifts for their friends    B. have a day off work or school

C. have a big meal    D. play some jokes on others

5.The last paragraph is mainly about ________ people in different countries celebrate April Fool’s Day.

A. why    B. when    C. how    D. where