当进行彩色多普勒检查时，如彩色血流显示不佳，有许多辅助调节，下列项目中，哪一项是重要

阅读理解。

     A man has got a parrot (鹦鹉). It is blue and green. It can speak like a man. Every morning the man goes

to talk with it. But the parrot does not say anything to him. Then one morning the man is angry (生气) with it.

He does not give it any food or water. The next morning the man goes to see the parrot again. He says

something to it. But the parrot does not speak. At last the man says"Fool (蠢材)! You are a fool." Soon the

parrot also says"Fool! You are a fool." The man laughs. He loves it very much. It is a clever parrot.

1. The man has got a ______.

A. monkey

B. dog

C. parrot

D. tiger

2. The parrot can _____ like a man.

A. do

B. work

C. cook

D. speak

3. The man is _______, so he doesn't give any food or water to the parrot.

A. angry

B. happy

C. sad

D. ill

4. Which is true?

A. The man goes to talk with the parrot every morning.

B. The parrot never says anything in the story.

C. The parrot is red and blue.

D. The parrot cannot speak.

5. The man loves the parrot very much because _____.

A. the parrot is beautiful

B. the parrot can speak

C. he thinks the parrot is very clever

D. he is very angry with the parrot.

已知雨量杯的直径为4cm，若用它来测量口径20cm的雨量器收集的降水量、雨量杯的放大率是（）倍。.

A.5

B.15

C.20

D.25

有关畸胎瘤的描述不正确的是（）

A.可同时出现所有胚层来源的组织

B.神经上皮组织最常见

C.恶性畸胎瘤是指肿瘤中有生殖细胞瘤及绒毛膜上皮癌成分

D.松果体区肿瘤（松果体细胞瘤、生殖细胞瘤及畸胎瘤）会导致性早熟

E.畸胎瘤CT值可低于脑脊液，也可高至接近骨质

女性，33岁，四肢无力3d，病前2周有上感史，现有吞咽困难，声音嘶哑，自觉肢体有蚁走感，无尿便障碍。查体：神清，构音障碍，双侧额纹及鼻唇沟变浅，鼓腮漏气，伸舌居中，四肢肌力3～4级，BCR、PSR左侧(+)、右侧(+)，Babinski征阴性，感觉系统查体无异常。该患者最可能诊断为

A．多发性硬化
B．吉兰-巴雷综合征
C．重症肌无力
D．急性脊髓炎
E．慢性炎症性脱髓鞘性多发性神经病

国家推进网络安全（）建设，鼓励有关企业、机构开展网络安全认证、检测和风险评估等安全服务。

A.社会化识别体系

B.社会化服务体系

C.社会化认证体系

D.社会化评估体系