只有透过血脑屏障在脑内变成多巴胺才能产生抗帕金森病作用的药物是()。 A.司来吉兰

题型:单项选择题

问题:

只有透过血脑屏障在脑内变成多巴胺才能产生抗帕金森病作用的药物是()。

A.司来吉兰

B.苯海索

C.金刚烷胺

D.左旋多巴

E.以上都不是

考点:广东住院医师广东住院医师全科医学广东住院医师全科医学模拟试卷(五)
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虚拟存储系统能够为用户程序提供一个容量很大的虚拟地址空间,其大小受到( )的限制。

A.内存实际容量大小
B.外存容量及CPU地址表示范围
C.交换信息量大小
D.CPU时钟频率

题型:单项选择题

    Little Tommy was doing very badly in math. His parents had tried everything -- tutors, cards, special learning centers -- in short, everything they could think of. Finally they took Tommy to a catholic(天主教的) school.

After the first day, little Tommy came home with a very serious look on his face. He didn't kiss his mother hello. Instead, he went straight to his room and started studying. Books and paper were spread(铺开)out all over the room and little Tommy was hard at work. His mother was surprised. She called him down to dinner and as soon as he finished eating, he went back hitting the books as hard as before. This went on for some time, day after day while the mother tried to understand what was happening.

Finally, little Tommy brought home his report card. He quietly put it on the table and went up to his room and hit the books. His mother looked at it and to her surprise, little Tommy got an A in math. She could no longer hold her curiosity(好奇心). She went to his room and asked, "son, what was it? Was it the nuns(修女)?"

Little Tommy looked at her and shook his head(摇动), "No."

"Well then," she asked again. "What was it?"

Little Tommy looked at her and said, "Well, on the first day of school, when I saw that man nailed(钉) to the plus sign(加号), I knew they weren't joking."

小题1: Why did Tommy's parents send him to a catholic school?

A.Because he could eat well there.

B.Because he could learn more about nuns.

C.Because his parents wanted him to do better in his math.

D.Because his parents didn't want him to learn math any more.小题2:Tommy's mother felt surprised that his son _____.

A.was still the same

B.ate so much at dinner

C.kissed her hello after school

D.worked so hard but said too little小题3:The phrase "hit the books" means “_____” in Chinese.

A.用功

B.捶书

C.发泄

D.振作小题4:The last sentence in the passage shows that ______.

A.Tommy felt sorry for the man

B.Tommy didn't like the plus sign

C.Tommy was afraid of being nailed

D.Tommy liked playing jokes on others

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根据《国务院关于加强食品等产品安全监督管理的特别规定》,生产经营者只负责产品的生产、销售,产品安全须由监督管理部门负责。( )

题型:单项选择题

青少年期后逐渐萎缩()

A.骨髓

B.胸腺

C.淋巴结

D.脾

E.黏膜相关淋巴结组织

题型:单项选择题

在黑暗条件下,细胞分裂素可延缓成熟绿叶中叶绿素的降解,表明细胞分裂素能()

A.延缓叶片变黄

B.促进叶片衰老

C.在成熟的叶肉细胞中合成

D.独立调节叶绿素降解的生理过程

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