大补元气，补脾益肺，生津止渴，安神益智（）。 A．山药 B．白术 C．黄芪 D．甘草

下列关于预算的说法，不正确的是( )。

A．全面预算体系由财务预算、专门决策预算和总预算组成
B．预算可以实现企业内部各部门之间的协调
C．数量化和可执行性是预算最主要的特征
D．预算是对目标的具体化，是将企业活动导向预定目标的有力工具

从显象管尾部灯丝发射出来的电子，高速撞击在电视机荧光屏上，使屏幕发光，则在显象管内[ ]

A．电流的方向从灯丝到荧光屏

B．电流方向从荧光屏到灯丝

C．显象管内是真空，无法通过电流

D．显象管中电流的方向不断改变

行政复议决定书邮寄送达的，以什么时候为送达日期( )

A．挂号回执上注明的收件日期

B．复议机关作出复议决定的日期

C．邮局寄出复议决定书邮件的邮戳日期

D．邮局收到复议决定书邮件的邮戳日期

男，42岁，3天前体力劳动时突发心前区疼痛，2天来出现心悸气急，双下肢水肿，查体血压150/65mmHg，胸骨左缘3～4肋间可闻及Ⅳ级粗糙连续性杂音，可触及震颤，股动脉枪击音，最可能的诊断是（）

A.先天性室间隔缺损合并主动脉瓣关闭不全

B.主动脉窦瘤破裂

C.急性心肌梗死并发室间隔穿孔

D.动脉导管未闭合并心力衰竭

E.不稳定心绞痛

Scientists are learning more about our (67) for sleep. Most people sleep (68) eight hours each night. (69) people sleep more than (70) and others sleep as (71) as two or three hours each night. (72) do not know exactly (73) some people sleep more than others. Dr. Ernest Hartman has an idea about this. He believes the (74) of sleep depends on how a person attacks problems. He said people who need only a few (75) sleep usually are people who have much energy and make good use (76) time to get their work (77) quickly. (78) he said many people who sleep longer than normal de creative work and seem to need (79) dreaming time to find (80) to emotional problems. Some scientists agree with this idea and others dispute.
To determine the (81) of the lack of sleep, scientists have put subjects (82) a set of psychological and performance tests (83) them, for instance, (84) columns of numbers or recall a passage read to them only minutes earlier, "We’ve found that if you’re in sleep deficit (缺乏), performance suffers," says Dr. David. "Short-term memory is (85) , as are abilities to (86) decisions and to concentrate.\

A．And

B．While

C．Thus

D．But