请简述美术教案设计的原则。
参考答案:
①明确目的性;②注意科学性;③加强针对性;④做到计划性;⑤具有预见性。
The volunteers sent _______ books to a mountain village school on Children’s Day. [ ]
A. two hundreds of
B. two hundred of
C. two hundreds
D. two hundred
金锁固精丸证的功用是()
A.补脾涩精
B.补肾涩精
C.养肝涩精
D.益肺涩精
E.清心涩精