股票或债券上市交易的公司，应当在每一会计年度的上半年结束之日起( )个月内，向国家

Sleepless in Seattle? Hardly. West Virginia is where people are really staying awake, according to the first government study to monitor state-by-state differences in sleeplessness. West Virginians’ lack of sleep was about double the national rate, perhaps a side effect of health problems such as obesity (肥胖), experts said.

Nearly 1 in 5 West Virginians said they did not get a single good night’s sleep in the previous month. The national average was about 1 in 10, according to a federal health survey. Tennessee, Kentucky and Oklahoma also were notably above average with nearly 1 in 7 people reporting in a lack of sleep. In contrast, North Dakota was below average, with only 1 in 13 reporting that degree of sleeplessness. Health officials do not know the exact reasons for the differences.

In the survey, people weren’t required to answer the question why they were not able to get enough rest or sleep. But experts noted several possible explanations: West Virginia ranks at or near the bottom of the nation in several important measurements of health, including obesity, smoking, heart disease and the proportion of adults with disabilities.

Studies have increasingly found that sleeping problems often occurred among people with certain health problems, including obesity. “You would expect to see poorer sleep within a chronically (慢性地) diseased population,” noted Dr Ronald Chervin, a sleep disorders expert in University of Michigan.

Financial stress and work shifts (倒班) can play roles in sleeplessness, too, Chervin added. He suggested those may be contributing factors in West Virginia, an economically depressed state with tens of thousands of people working in coal mining.

The report was based on results of an annual telephone survey of more than 400,000 Americans, including at least 3,900 in each state. The survey did not include people who use only cellphones.

小题1:What is the main idea of Paragraph 1? (No more than 15 words.)

___________________________________________________________________________

小题2:What does the underlined word “notably” in Paragraph 2 mean? (No more than 3 words.)

___________________________________________________________________________

小题3: What was the possible reason for the high rate of sleeplessness in West Virginia according to Paragraph 3?  (No more than 12 words.)

___________________________________________________________________________

小题4:List three factors that contribute to sleeplessness based on the passage.

(No more than 8 words.)

①____________________ ②_____________________ ③______________________

小题5:How was the research carried out? (No more than 10 words.)

___________________________________________________________________________

患者女性，12岁。口腔检查：恒牙列，上下颌左右第二恒磨牙初萌，上下颌左右第一恒磨牙中性关系，上下牙列拥挤，上颌左右侧切牙和第一、二前磨牙腭侧移位，并与对牙呈反，上下颌左右尖牙唇移位，上颌左右中切牙与下颌中、侧切牙呈浅覆盖，侧面示：唇及颏部外形基本正常。X线头影测量结果示：SNA，SNB，ANB角正常，U1-NA角（距）偏小，L1-NB角（距）正常，PO-NB距正常，上下切牙间角偏大，平面及下颌平面角正常。

根据该患者的具体情况，在方丝弓矫治的第一阶段中可以应用（）。

A.上颌螺旋扩大器进行上颌快速扩弓

B.上颌舌弓以扩大上颌牙弓

C.0.016英寸钛镍丝或0.014英寸不锈钢圆丝作起始弓丝

D.0.016英寸不锈钢圆丝或澳丝作起始弓丝

E.可配合戴用下颌垫以解除反牙锁结

F.配合戴用下颌舌弓以扩大下牙弓

G.进行颌间牵引以建立良好的牙咬合关系

大容量电站锅炉一般都采用（）炉。

A.层燃

B.室燃

C.旋风

D.沸腾

( )越高，代表企业承担债务的能力越强。

A．现金流动负债比
B．现金到期债务比
C．偿债备付率
D．流动比率

根管治疗中，根管消毒常用药物刺激性最强的为

A．丁香油
B．甲醛甲酚
C．樟脑酚
D．碘仿
E．抗生素类药物