关于碘化氢，下列叙述不正确的是（） A．碘化氢的水溶液是一种弱酸 B．碘化氢的水

阅读下面材料，从每题所给的三个选项（A、B和C）中，选出最佳选项。

What should you take in with you when you take an exam? Pen, pencil, eraser, ruler … and don’t forget a bottle of water!

According to a study held in London, students who bring water into exams may improve their grades by up to 10%.

Scientists in UK did the study on 448 students. The students were studying for different degrees  at the University of East London. Only 25% of them entered the exam hall with water.

Scientists then compared their exam results with their normal schoolwork grades. They found that all those who had brought water with them got better grades by 2% to10%.

Scientists also predicted the students’ scores according to their normal schoolwork. They wrote down their possible scores on paper before exams.

It is unclear why drinking water improves exam results. But scientists say having enough water in our bodies and not feeling thirsty could have a helpful effect on our brains. Drinking water may also reduce anxiety (焦虑), which has a bad effect on exam performances.

“Whatever the explanation is, it is clear that students should try hard to stay hydrated (含水的) with water during exams,” one of the scientists said.

So next time, when you are going to have a big exam, try bringing a bottle of water with you. It may help you pass the exam!

小题1:According to the study, students who bring water to exams may ______.

A. get better scores

B. feel worried in exams

C. be smarter than others

小题2:How many students brought water during the exam in the study by the UK scientists?

A. 25.   B. 112.   C. 448.

小题3:Having enough water in exams ______.

A. makes the students smarter

B. helps the students stay calm

C. improves the students’ scores by 20%

小题4:The underlined word “predicted” means “______”.

A. 预测          B. 提高         C. 更正

小题5:What’s the best title for the passage?

A. The more water, the higher scores

B. Anxiety in the exams

C. Water helps in exams

关于某上市公司选任和解任独立董事，下列表述中正确的是( )。

A．公司监事会可以提名独立董事人选

B．欲提名独立董事人选的公司股东必须单独或合并持有该上市公司已发行股份的10%以上

C．独立董事可连选连任，连任时间不受期限限制

D．公司董事会可以解任经常不参加会议的独立董事

门静脉高压症患者外科手术治疗最主要的目的是（）

A.减轻腹水

B.提高抵抗力

C.防止肝功能衰竭

D.降低门静脉压力

E.紧急制止上消化道出血

生理性状态下脐带扭转的周数是（）

A.8～14周

B.4～8周

C.4～6周

D.11～16周

E.6～11周

在古典传统里，和谐的反面是千篇一律。“君子和而不同，小人同而不和”，所以和谐的一个条件是对于多样性的认同。中国人甚至在孔子之前就有了对于和谐的经典认识与体现。中国古代的音乐艺术很发达，特别是一些中国乐器，像钟、罄、瑟等各种完全不同的乐器按照一定的韵律奏出动听的音乐，但如果只有一种乐器就会非常单调。
对这段文字概括最准确的是( )。

A．和谐观念源于中国古代音乐
B．差异是和谐的一个必要条件
C．中国人很早就产生了和谐观念
D．音乐是对和谐的经典认识与体现