在我国，公安机关的基本职能是( )A．民主职能和专政职能 B．政治 * * 职能和社会管

You may feel curious (好奇的) about students in other countries: Do they also have so much homework? What do they do in their free time?

On April 8, a report came out on the lives of high school students in China, Japan, South Korea and the US. It surveyed around 6,200 students from the four countries last year. You will find the answers to many of your questions in this report.

Who studies hardest?

Chinese students spend the most time studying. Nearly half of Chinese students spend more than two hours on their homework every day. That’s much more than students of the US (26.4%), Japan (8.2%) and South Korea (5.2%).

Who sleeps most often in class?

Japanese students fall asleep in class most often. About 45% of them said they sometimes doze off in class. In South Korea, it’s 32%; in the US, 21%; and 5% in China.

South Korean students don’t like taking notes. About 70% said they write down what the teacher says in class, much fewer than in Japan (93%), China (90%) and the US (89%).

Who is the most distracted (分心的)?

American students are the most active in class, but also the most distracted: 64.2% said they chat with friends in class; 46.9% said they eat snacks in class; and 38.9% said they send e-mails or read unrelated (无关的) books in class.

What do they do after school?

In their free time, most Chinese students study or surf the Internet. Most American students hang out with their friends. Most Japanese students do physical exercises. Most Korean students watch TV.

小题1:The report is about ___________.

A．the countries

B．the subjects

C．the students’ lives

D．the high schools小题2:What country isn’t mentioned in the report?

A．The US

B．South Korea

C．Japan

D．India小题3: ______ of the Chinese students spend more than two hours on their homework.   

A．26.4%

B．8.2 %

C．5.2%

D．48.6%小题4:The phrase doze off means ______.

A．be half asleep

B．get up

C．eat snacks

D．send emails小题5:What of the following sentences is Not true?

A．The survey from the four countries was made last year.

B．Most Japanese students do physical exercises after school.

C．About half of the American students chat with friends in class.

D．The students in South Korean don’t like taking notes in class.

血液病患者白细胞数低于以下哪项时应予保护性隔离（）。

A.1×10⁹/L

B.2×10⁹/L

C.3×10⁹/L

D.3.5×10⁹/L

E.4×10⁹/L

关于思维迟缓，下列描述正确的是（）

A.抑郁症的典型症状之一

B.强迫症的典型症状之一

C.癔症的典型表现之一

D.癫痫所致精神障碍典型表现之一

E.精神分裂症的典型表现之一

男性，42岁，间断头痛半年多，有时呕吐，伴双眼视力下降，查体发现双眼视 * * 边缘模糊，隆起且有散在出血点，余（-）。

影像检查未发现异常时，如腰穿CSF化验正常，而颅压为400mmH₂0，应诊断为（）

A.良性高颅压

B.脑膜炎

C.脑血管痉挛

D.梗阻性脑积水

E.脑水肿

冷态启动时，转子外表面为（）应力，中心孔外承受（）应力。