已知函数y=ax+2a的图象经过点P(1,3),则a=______.
∵函数y=ax+2a的图象经过点P(1,3),
∴3=a+2a,a=1.
故填1.
阅读短文,判断对(√)错(×)。
Hi! My name's Sarah. Look at my family photo. This is my father. He's a teacher. He's tall. He likes sports.
This is my mother. She's a teacher, too. She likes reading. This is my brother. He's a baseball player. He's
strong. I love my family.
( ) 1. Sarah's father is a doctor.
( ) 2. Sarah's mother is a teacher.
( ) 3. Sarah's father doesn't like sports.
( ) 4. Sarah's brother is thin.
( ) 5. There are five people in Sarah's family.
《金融机构大额交易和可疑交易报告管理办法》自( )起施行。
A.2007年3月1日
B.2003年3月1日
C.2005年3月1日
D.2001年3月1日