认定足以严重危害人体健康的假药犯罪鉴定机构为( )。A．省级以上产品质量监督检验机

下列关于细胞结构和功能的叙述中，不正确的是[ ]

A．精子细胞、神经细胞、根尖分生区细胞不是都有细胞周期

B．乳酸菌、酵母菌都含有核糖体，遗传物质都是DNA

C．能抑制膜上载体活性或影响线粒体功能的毒素，都会阻碍根细胞吸收矿质离子

D．能进行光合作用的细胞一定含有叶绿体

心理咨询的（）是指咨询师从求助者的角度出发了解求助者的问题，对求助者的困惑与处境表示理解，同时不予以评价，不掺杂个人的情绪与观点。

A.限制性观点

B.中立性态度

C.唯物主义观点

D.普遍联系的观点

阅读短文，从方框中选择适当的动词，并用其适当形式填空。有的需要加助动词或不定式符号 (每词限用一次)。

Mr. Jackson is sixty-four years old. He (1) ______________ in a high school in a small town. All the town people know him very well because he (2) ______________ a teacher there for over forty years.

Mr. Jackson was born in London. He was twenty-two when he (3) ______________ college. Then he came to the small town to teach. He is hard-working and always makes his lessons interesting. He likes his students and the students like him, too. He (4) ______________ as the best teacher in the school.

Mr Jackson will retire next year. But he doesn’t plan (5) ______________ back to London. “I think this small town is my hometown. I won’t leave it,” he said.

统计分析主要针对GIS中的属性数据进行的，若要了解数据分布的集中位置，可以计算数据的集中特征数，如（）

A.极差

B.频数和频率

C.离差

D.平均数

E.数学期望

简述积极控制的价值。