在一次探究成果汇报课上,某同学展示了她的探究实验:取一瓶无色的硫化氢(H2S)气

题型:实验题

问题:

在一次探究成果汇报课上,某同学展示了她的探究实验:取一瓶无色的硫化氢(H2S)气体和一瓶无色的二氧化硫气体(SO2),然后瓶口对瓶口抽去玻璃片放置(如下图所示),一段时间后,两瓶的内壁上均出现水珠,并且有淡黄色的细微颗粒物附在瓶内壁上(已知是硫单质)。试分析此同学的探究活动取得了哪些成果。

考点:分子的特点
题型:实验题

女,28岁,月经正常,B超示子宫、双卵巢大小正常,左卵巢上方见单房5cm圆形无回声区,张力高,内壁光,后壁回声增强,随访一年肿块大小无明显变化。

诊断可能是

A.浆膜下肌瘤囊性变

B.多囊卵巢

C.左侧卵巢冠囊肿

D.左卵巢滤泡囊肿

E.左卵巢浆液性囊腺癌

题型:实验题

下列条件中,哪些条件下,人民政府负责安排工作?()

A.士官服现役满10年的

B.服现役期间平时荣获二等功以上奖励

C.所有被评定为6级残疾等级的

D.是因公牺牲士兵的子女的

题型:实验题

一侧皮质核束支配( )

A.双侧疑核

B.双侧面神经核

C.双侧舌下神经核

D.对侧滑车神经核

E.对侧动眼神经核

题型:实验题

质量为26g的某物体的体积是10cm3,它的密度是______g/cm3,把该物体分成两等份,则每一等份的密度是______kg/m3

题型:实验题

Passage Two

According to a survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are "more materialistic and less altruistic (利他主义的)" than at any time in the 17 years of the poll.
Not surprisingly in these hard times, the students’ major objective "is to be financially well off. Less important than ever is developing a meaningful philosophy of life." It follows then that today the most popular course is not literature or history but accounting.
Interest in teaching, social service and the "altruistic" fields is at a low. On the other hand, enrollment in business programs, engineering and computer science is way up.
That’s no surprise, either. A friend of mine (a sales representative from a chemical company) was making twice the salary of her college instructors during her first year on the job even before she completed her two-year associate degree.
While it’s true that we all need a career, it is equally true that our civilization has accumulated an incredible amount of knowledge in fields far removed from our own and that we are better for our understanding of these other contributions, be they scientific or artistic. It is equally true that, in studying the diverse wisdom of others, we learn how to think. More importantly, perhaps, education teaches us to see the connections between things, as well as to see beyond our immediate needs.
Weekly we read of unions who go on strike for higher wages, only to drive their employer out of business. No company; no job. How shortsighted in the long run!
But the most important argument for a broad education is that in studying the accumulated wisdom of the ages, we improve our moral sense. I saw a cartoon recently which shows a group of businessmen looking puzzled as they sit around a conference table; one of them is ta]king on the intercom (对讲机): "Miss Baxter," he says, "could you please send in someone who can distinguish right from wrong "
From the long-term point of view, that’s what education really ought to be about.

The students’ criteria for selecting majors today have much to do with ______.

A.the influences of their instructors

B.the financial goals they seek in life

C.their own interpretations of the courses

D.their understanding of the contributions of others

更多题库