哪一脏的气机运动有升降，有出入？（）A.心 B.肺 C.脾 D.肝

已知菱形ABCD的两条对角线相交于点O，若AB=6，∠BDC=30°，则菱形的面积为______．

O．u．为（）

A．OQ 

B．PQ 

C．PV 

D．IQ 

E．SIP

The couple finally bought the house they wanted, for they______enough money.

A．had saved

B．were saving

C．would save

D．were to save

实验设计的基本要素是（）

A.处理因素、实验效应、受试对象

B.处理因素、实验效应、研究人员

C.受试对象、研究人员、处理因素

D.受试对象、处理因素、干扰因素

E.处理因素、实验效应、实验场所

Charles liked music very much when he was at school, but (41) he went to the university he decided to study medicine (42) music. When he passed his examinations and became a doctor, he had to work in a hospital for (43) . There he discovered that a lot of patients were happier if (44) music was played for them. When Charles got an office and began to work (45) himself, he decided to (46) his patients happy by having a tape recorder in his waiting room play beautiful music for them.
But (47) the tape recorder had been put in(安装), Charles’ nurse heard a woman complain in the crowded (48) , "Here we’re (49) waiting to see the doctor, and he’s just playing (50) piano in his office instead of doing his work. \

[A]beautiful [B]loud[C]sad