下列哪一项一般不用作为急性中毒时提供毒物鉴定的标本()A．呕吐物 B．胃液 C．剩余

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在相应位置上。

US President Barack Obama sat down for beers with a Harvard professor and a police officer at the White House on July 30. They were not talking about big problems, 1 making small talk.

A few weeks ago, the white police officer, James Crowley, arrested the black professor, Henry Louis Gates.

On July 16, police went to Gates’ home   2  a neighbor called the police to say that she had seen two men trying to force open the front door. Gates was coming home from a trip and found his door 3 (stick) , so he and his taxi driver tried to force it open.

Crowley arrived and asked Gates to prove he was the   4 (own) of the home. But Gates flew into a rage and accused Crowley 5 being racist. Crowley arrested Gates. A hot debate was stirred up. Obama suggested holding a "beer summit" in the hope that the men 6 work out their problem by talking.

Racism has been 7  major problem in US history. Historically, the country has been dominated by whites. Blacks, American Indians, and some other peoples were discriminated.

Over the years, much progress has been made in fighting racism. In 1964, the Civil Rights Act was passed. It made discrimination based on race and color illegal. In 1965, President Johnson passed the Voting Rights Act, making   8 easier for blacks to vote.

In 2008, Obama became US’ first black president. This was a big step forward. However, the Gates incident suggests that US still   9 (have) a long way to go        10 it has fixed its racial problems.

某高校教师与民办大学签约，当年在业余时间为其讲授大学语文、应用文基础、古诗赏析三门课程，则关于其讲课费应纳个人所得税，下列说法正确的是（）。

A.课程结束时按三门课程分别计算

B.合计全部收入一并计算

C.按每个月取得的收入计算

D.平均每个月收入计算

大跨度的工业厂房要采用（）结构。

A.砖木

B.砌体

C.钢筋混凝土

D.钢

对有意损坏餐用具的客人，要及时与店内保卫部门取得联系，并让客人（），但要注意态度及方法。

A、照价赔偿

B、半价赔偿

C、适当赔偿

D、高价赔偿

（），是职业道德的基础和核心，是社会主义职业道德所倡导的首要规范。

A.爱岗敬业

B.诚实守信

C.遵纪守法

D.办事公道