题干
When is April Fool's Day?
A：On December 25th.
B：On October 1st.
C：On January1st.
D：On April 1st.
答案(点此获取答案解析）
D
When is April Fool's Day?
A：On December 25th.
B：On October 1st.
C：On January1st.
D：On April 1st.
