患者男，57岁。反复便血4个月。患者4个月前，排便时发现粪便表面附着少量鲜血，未予理会，以后常常发现粪便表面带血，无黏液及脓，无腹痛，无里急后重，大便每日一次。发病以来无发热，食欲好，体重无明显变化。查体：一般状态好，皮肤黏膜未见出血点，心肺查体未见异常，腹平软，肝脾肋下未触及，全腹无压痛，未触及包块，肠鸣音正常。
为确定诊断，应进一步做哪些检查（）。
Text 3
Scientists Johan Feenstra and Rob Hayes think they’ve figured out how a process called electrowetting can make paper that can do anything a videoscreen does. So far, though, all they’ve got to show for their efforts is a tiny piece of e-paper one centimeter square--only 225 pixels, or picture elements. That won’t be nearly enough for headlines and news videos. The only hint of the technology’s potential is a laptop presentation the inventors have set up. It features Professor Shape, Harry Potter’s teacher, holding an electronic newspaper with an embedded video clip. "That’s what we want," says Hayes.
They’re likely to get it. Late last month in Tokyo, Sony took an important leap in this direction by introducing Librie, an e-book reader. Although it’s available only in black and white, Librie has the most important characteristic of paper: it reflects natural light. That means it can be read on
A. they made an electronic newspaper.
B. they created a piece of videoscreen-like paper.
C. they made a tiny piece of primitive e-paper.
D. they invented the electrowetting technology.
| Like many high school heads, Mike
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kill themselves each year. After accidents and murders, suicide is another{{U}} (70) {{/U}}cause of death for high-school students. According to a{{U}} (71) {{/U}}calculation, one out of every five high-school students has thought seriously about attempting{{U}} (72) {{/U}}, and one in 14 has made an actual{{U}} (73) {{/U}}. Faced with this{{U}} (74) {{/U}}, teachers and people who are in{{U}} (75) {{/U}}of the schools are struggling to find good ways to prevent suicide and{{U}} (76) {{/U}}with its bad effect [填空题]因实致痛的病机是（）；因虚致痛的病机是（）。
[多选题]下列（）属于特种劳动防护用品。
A.安全帽# B.防尘口罩# C.防毒面具# D.防寒服 [简答题]古埃及文明的一大遗憾是没有留下？
我来回答: 提交
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