乌梅丸证的治法是（） A.寒温并用，健脾除湿 B.清上温下，安蛔止痛 C.寒温并用，

蛋白质变性是由于（）

A.肽键断裂，一级结构遭到破坏

B.蛋白质中的一些氨基酸残基受到修饰

C.蛋白质分子沉淀

D.次级键断裂，天然构象解体

E.多肽链的净电荷等于零

考前复习时，一位成绩和你不相上下的同学向你请教一个问题。你应该   [ ]

A．认真告诉他解决办法

B．敷衍他一下

C．告诉他自己也不会

D．装作不懂

A quarter of US adults say they read no books at all in the past year, according to an Associated Press-Ipsos survey. The typical person said that he / she read four books in the last year and, excluding those who had not read any books at all, the usual number of books read was seven.

Of those who did read, women and pensioners (领养老金者) were the most eager readers, and religious works and popular fiction were the top choices. The number of books read was nine books for women and five for men. The number also showed that those with college degrees read the most, and people aged 50 and over read more than those who are younger.

People from the West and Midwest are more likely to have read at least one book in the past year. Southerners who do read tend to read more books — mostly religious books and romance novels — than people from other regions.

Those who said they never attend religious services read nearly twice as many books as those who attend frequently, but the Bible and religious works were read by two thirds of the people in the survey, more than all the other categories. Popular fiction, histories, biographies and mysteries took up about half, while one in five read romance novels. Politics, poetry and classical literature were named by fewer than 5% of readers. More women than men read every major category of books except for history and biography books. Men tend to prefer non-fiction.

Book sales in the US have been flat in recent years and are expected to stay that way, which, experts think, results from competition from the Internet and other media, and the unsteady economy.

小题1:The passage mainly tells us ______.

A．the number of Americans who read books last year dropped

B．the book sales in the US have been dropping in recent years

C．the reasons why one in four Americans read no books last year

D．about region differences in the number and kind of books read last year小题2:Which kind of Americans read the most last year according to the survey?

A．Older men with college degrees from the South.

B．Older women with college degrees from the South.

C．Younger educated men from the Midwest.

D．Younger educated women from the West.小题3:What kind of books was read most according to the passage?

A．Religious works.

B．Popular fiction.

C．Poetry.

D．History.小题4:Which of the following reasons why people read fewer books is true?

①. Competition from the Internet.  

②. Competition from other media.

③. The unsteady economy.

④. People attend religious services

⑤. No time for reading.

A．①②③

B．②③⑤

C．①③⑤

D．②③④

卵巢动静脉经什么韧带进入卵巢门( )

A．骨盆漏斗韧带
B．主韧带
C．圆韧带
D．宫骶韧带
E．卵巢固有韧带

下列哪些故障可能不会导致动力转向助力不足。（）

A.液压油面过低

B.转向泵泵油能力不足

C.转向器内泄露过大

D.转向器齿条调整过松