爱因斯坦发表狭义相对论时，有人问他：预计公众会有什么反应他答道：很简单，如果我的理论

Many scientists believe that life begins in the ocean long ago. For age man used the ocean to discover and explore new lands. Now man spends a great deal of time or money discover the ocean. We know it is rich at minerals which the world need. We know too that it contains a plenty of food for all the people in the world. We know that if the salt were taken from it, it’s water would turn the deserts into rich farm lands. We know a great deal about this land frontier, as it has called. But we still need to learn many more about it.

慢性胎儿窘迫最常发生的时期为（）

A.妊娠早期

B.妊娠中期

C.妊娠晚期

D.分娩期

E.第二产程

医疗机构从业人员分为几个类别（）。

A.3个

B.4个

C.5个

D.6个

E.7个

脉来弦长有力，沉取始得，是（）

A.实脉

B.牢脉

C.紧脉

D.弦脉

E.伏脉

法学