下列哪类人群中，PPD阳性对提示活动性结核病最有价值A．肺内有结节样病灶伴纵隔淋巴结

患者男，60岁，胃大部切除术后。术后第1天晚间患者主诉伤口疼痛，疼痛评分6分（长海痛尺），遵医嘱肌内注射哌替啶75mg，注射后30min疼痛评分1分，睡眠基本不受干扰。

关于长海痛尺，叙述错误的是（）

A.保留了0～10和0～5两个痛尺的功能和优点

B.解决了单用0～10痛尺评估时困难和随意性过大的问题

C.解决了单用0～5痛尺评估时的精度不够的问题

D.6分为重度疼痛

E.主要用于胸腹部大手术术后患者

如图是小明用来证明植物的叶是蒸腾作用的主要部位的实验装置．请认真观察并分析回答：

（1）这个实验及装置有两个不足之处：一是______，二是______．

（2）经小组讨论后，对实验进行了改进：取两盆植株大小相同的同种植物标记为甲、乙，甲植株不做任何处理，乙植株______，分别用不透气的透明塑料袋罩住两植株，在茎的基部扎紧塑料袋口，然后将两个装置同时放到光下照射两个小时．

（3）请你预测实验结果：甲______，乙______．

下列关于远期利率合约的说法，不正确的是（）。

A．远期利率可由即期利率曲线推断

B．远期利率合约是一项表内资产业务

C．债务人通过购买远期利率合约，锁定了未来的债务成本，规避了利率可能上升带来的风险

D．债权人通过卖出远期利率合约，保证了未来的投资收益，规避了利率可能下降带来的风险

Do other countries’ students also have so much homework? What do they usually do in their free time? You may feel curious about them.

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 offin 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, many 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 books in class.

What do they do after school?

In their spare time, most Chinese students study or surf the Internet. Most American students hang out with their friends. Most Japanese students do physical exercise. 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

国内目前最常见的固定桥桥体类型是

A．金属桥体

B．金属与非金属联合桥体

C．非金属桥体

D．悬空式桥体

E．自凝塑料桥体