什么是藏书建设的系统性原则？
参考答案：
又称藏书的连续性，它有两层一是指重点藏书的系统完整，二是全馆藏书的相互联系，有比例，成体系。
可用于放出适量血液的针具是
A．皮肤针
B．毫针
C．三棱针
D．艾条
E．以上均不是
In my opinion, it is not so helpful to give someone some bread as it is important to teach him how to _____.
A．make a life
B．make progress
C．make sense
D．make his way
