关于急性感染性心内膜炎不正确的是A．发病机制不清 B．主要累及正常瓣膜 C．二尖瓣常

成人颞下颌关节紊乱病正畸治疗的方法（）

A.正畸治疗应尽量应用容易清洁的矫治器，如弹性牵引

B.正畸治疗应尽量应用容易清洁的矫治器，如前牙平面导板

C.正畸治疗强调对称拔牙

D.成人颞下颌关节病应通过矫形治疗调整下颌的生长及髁突的位置

E.成人颞下颌关节病应选用简单的矫治装置，矫正引起TMD的错牙

美国发射的花了大约5个半月的时间、到达火星轨道、成为第一艘环绕别的一颗行星运行的宇宙飞船（）

A、"水手9号"

B、"海盗1号"

C、"海盗2号"

A new study has found evidence of aggressive (攻击性的) behavior in children who drink four or more servings of soft drinks every day. Information for the study came from the mothers of 3,000 5-year-olds. Researchers asked the women to keep a record of how many servings of soft drinks their children drank over a two-month period. They were also asked to complete a checklist of their children’s behavior.

The researchers have found that 43 percent of the children drink at least one daily serving of soda, and 4 percent of the youngsters have even four or more sodas to drink every day.

Shakira Suglia, a famous expert, says they’ve found that children who drink the most soda are more than twice as likely as those who drink no soda to show signs of aggression.

“For the children who consume four or more soft drinks per day, we see more withdrawn behaviors, which make them hard to get along well with others.”

The aggressive behaviors include destroying possessions belonging to others, taking part in fights and physically attacking people.

The researchers have determined the link after considering factors like the child’s age and sex. They have also considered other possible influence, such as whether the boys and girls are eating sweets or giving fruit drinks on a normal day. In addition, the researchers have examined parenting styles and other social conditions that may be taking place in the home.

Researches are trying to find why young children who drink a lot of soda have behavior problems. An ingredient often found in soft drinks is caffeine, which helps to make people feel energetic. Doctor Suglia suggests that caffeine could cause the 5-year-olds to be more aggressive. Earlier studies of adults have found the highest sugar levels in those who carry weapons (武器) and show signs of negative social behavior.

小题1:What section of a newspaper is the passage probably taken from?

A．Scientific Technology

B．Science Fictions

C．Social News

D．Health Report小题2:The underlined word “withdrawn” in paragraph 4 can probably be replaced by the word ______.

A．backward

B．unsocial

C．generous

D．friendly小题3:Researchers studied the following aspects of the children except ______.

A．age

B．sex

C．games

D．parents小题4:According to the research, which of the following is right?

A．Mothers were asked to keep a record of how many servings of soft drinks their children drank over a three-month period.

B．4 percent of the youngsters have even four or fewer sodas to drink every day.

C．Children who drink no soda show fewer aggressive behaviors.

D．Children with the highest sugar levels tend to carry weapons and show signs of negative social behavior.小题5:After a further study on ingredients in soda, Shakira Suglia implies that the direct cause of the aggressive behaviors may be ______.

A．soft drinks

B．attention problems

C．caffeine

D．social conditions

检查软件产品是否符合需求定义的过程称为______。

A．集成测试

B．确定测试

C．验证测试

D．验收测试

神州行品牌可办理以下哪些短信包月（）

A.2元包50条

B.5元包100条

C.50元包1000条

D.100元包2000条