钻井液中可溶性碳酸盐的污染表现为用化学稀释的方法处理不能降低静切力和高的屈服值，此时

我们都吃过黄豆芽，黄豆通过萌发长成幼苗的现象属于生命现象中的（　　）

A．遗传变异

B．新陈代谢

C．生殖现象

D．生长现象

关于ELISA竞争法正确的是（）.

A.用于检测抗原

B.被检测物与酶标记物的免疫活性各不相同

C.被测物多则标记物被结合的机会少

D.测定管的颜色比对照管的淡表示被测物量少

E.只用于检测抗体

易引起肠腔狭窄的疾病是（）

A.肠阿米巴病

B.细菌性痢疾

C.肠伤寒

D.肠结核

E.肠血吸虫病

Betty and Harold have been married for years .But one thing still puzzles (困扰) old Harold .How is it that he can leave Betty and her friend Joan sitting on the sofa ,talking ,go out to a ballgame ,come back three and a half hours later ,and they’re still sitting on the sofa ? Talking ?

What in the world ,Harold wonders ,do they have to talk about ?

Betty shrugs .Talk ? We’re friends .

Researching this matter called friendship ,psychologist Lillian Rubin spent two years interviewing more than two hundred women and men .No matter what their age ,their job ,their sex ,the results were completely clear :women have more friendships than men ,and the difference in the content and the quality of those friendships is “marked and unmistakable .”

More than two –thirds of the single men Rubin interviewed could not name a best friend. Those who could were likely to name a woman .Yet three-quarters of the single women had no problem naming a best friend ,and almost always it was a woman .More married men than women named their wife/husband as a best friend ,most trusted person ,or the one they would turn to in time of emotional distress （感情危机）.“Most women ,”says Rubin ,“identified （认定） at least one ,usually more ,trusted friends to whom they could turn in a troubled moment ,and they spoke openly about the importance of these relationships in their lives .”

“In general,”writes Rubin in her new book ,“women’s friendships with each other rest on shared emotions and support ,but men’s relationships are marked by shared activities.” For the most part ,Rubin says ,interactions （交往）between men are emotionally controlled –a good fit with the social requirements of “manly behavior .”

“Even when a man is said to be a best friend ,”Rubin writes ,“the two share little about their innermost feelings .Whereas a woman’s closest female friend might be the first to tell her to leave a failing marriage ,it wasn’t unusual to hear a man say he didn’t know his friend’s marriage was in serious trouble until he appeared one night asking if he could sleep on the sofa .”

小题1:What old Harold cannot understand or explain is the fact that     .

A．he is treated as an outsider rather than a husband

B．women have so much to share

C．women show little interest in ballgames

D．he finds his wife difficult to talk to小题2:Rubin’s study shows that for emotional support a married woman is more likely to turn to     .

A．a male friend

B．a female friend

C．her parents

D．her husband小题3:Which of the following statements is best supported by the last paragraph ?

A．Men keep their innermost feelings to themselves.

B．Women are more serious than men about marriage.

C．Men often take sudden action to end their marriage.

D．Women depend on others in making decisions.小题4:The research done by psychologist Rubin centers around________ .

A．happy and successful marriages

B．friendships of men and women

C．emotional problems in marriage

D．interactions between men and women .