A true friend is a person _________ reaches for your hand and touches your heart.
A：who
B：what
C：which
遵义会议在中国革命史上具有非常重要的历史意义。下列关于遵义会议叙述不准确的是（ ）
Our Summer Camp
When
On July 5th
Where
A ____mountain village
Who
Stay with the____
What
In the morning, we'll learn to ____animals from the local people.
In the afternoon, we'll____about the river.
In the evening, we'll enjoy the bright____.
在下列分类单位中，生物之间性状差异程度最小的是（ ）
已知直线上两点A,B的坐标分别为3,5,a,2,且直线与直线3x+4y-5=0垂直，则a的值为（ ）
