在下面列举的物理量单位中，哪些是国际单位制的基本单位[ ] A．千克(kg) B

患者女，60岁，南方某省农民。因反复腹痛、间断黑便2年，加重伴头晕3d入院。患者门诊诊断为消化性溃疡，予奥美拉唑、保护胃黏膜治疗1个月，症状无好转。3d前又感上腹部疼痛，排黑色干燥羊粪样便。查体：T36.4℃，P84次/min，Bp110/70mmHg，发育正常，重度贫血貌，心尖部闻及3/6级吹风样杂音，肺无异常，腹软，中上腹部轻压痛，无反跳痛及肌紧张。实验室检查：血白细胞5.2×10⁹／L，嗜酸粒细胞0.28，血红蛋白61g/L。粪常规：隐血试验阳性。肝功能正常。胃镜示慢性浅表性胃炎；肠镜示结肠、直肠未见异常。

患者应及时进行的检查是（）

A.肠供血动脉血管造影

B.腹部CT

C.胶囊内镜

D.抗核抗体

E.粪饱和盐水漂浮法镜检

The research is so designed that once _____ nothing can be done to change it.

A．begins

B．having begun

C．beginning

D．begun

X、Y、Z、W是元素周期表中原子序数依次增大的四种短周期，其相关信息如下表：

(1)W位于元素周期表第      周期第    族；W的原子半径比X的       

(填“大”或“小”)。

(2)Z的第一电离能比W的          (填“大”或“小”)；XY₂由固态变为气态所需克服的微粒间作用力是           。氢元素、X、Y的原子可共同形成多种分子，写出其中一种能形成同种分子间氢键的物质名称          。

(3)振荡下，向Z单质与盐酸反应后的无色溶液中滴加NaOH溶液直至过量，能观察到的现象是                      ；W的单质与氢氟酸反应生成两种无色气体，该反应的化学方程式是            。

(4)在25℃、101kPa下，已知13.5g的Z固体单质在Y₂气体中完全燃烧后恢复至原状态，放热419kJ，该反应的热化学方程式是                      。

   Probably many of you know the idiom “an eye for an eye and a tooth for a tooth”. But do you believe a tooth for an eye? That’s something a little bit different.

This strange exchange is neither a form of retribution(报应) nor an unexpected gift from the Tooth Fairy --- it’s actually a very generous gift from a young Irishman, Robert McNichol, 23, to his formerly blind father, 57-year-old Bob McNichol.

In 2005, Bob McNichol’s sight was destroyed in an accident when his eyes were doused(溅在……上面)with liquid aluminum(铝). Doctors predicted that he would never be able to see again.

But McNichol never liked to take no for an answer: when he heard about a unique operation called Osteo-Odonto-Keratoprosthesis, he knew he had to give it a shot, even though the success rate was a mere 65 percent.

In the technique, the eye socket(眼窝) is rebuilt and implanted(植入) with a human tooth and part of the jawbone, to provide support for an artificial cornea(角膜). Luckily for McNichol, Robert was willing to sacrifice one of his teeth to help his father regain his sight.

The technique isn’t simple: McNichol’s first stint on the operating table lasted ten hours, with a five hour follow-up session at a later date. But thanks to his son’s gift, he’s already seeing astonishing results.

“Now I have enough sight for me to get around and I can watch television. I have come out from complete darkness.” he told his friends.

小题1:Bob McNichol lost his sight ____ .

A．after he had an operation on his eyes

B．because of an accident

C．because he met with a serious traffic accident

D．when he was 57 years old小题2:The underlined phrase “give it a shot” (in Paragraph 4) probably means “____”.

A．give it a try

B．make a remark

C．fire a gun

D．kick the ball小题3:The tooth Bobert donated to his father is used to ____ .

A．make the eye socket look prettier

B．cause his jawbone to function well

C．help his father take in more food

D．support the implanted artificial cornea小题4:What would be the best title for the passage?

A．Father and son

B．A unique eye operation

C．A man defeating darkness

D．Blind man sees with aid of son’s tooth

Java语言的循环语句包括for语句、do—while语句和【 】语句。