造成流脑大流行的主要因素是A．人群免疫力下降，新的易感者增加 B．菌群毒力增加 C．

写出不同意思的关于手的成语。

(1)形容敏捷——(            )

(2)形容聪颖——(            )

(3)形容高兴——(            )

(4)形容勤奋——(            )

(5)形容凶狠——(            )

(6)形容顺利——(            )

(7)形容卑鄙——(            )

(8)形容高明——(            )

(9)形容利索——(            )

(10)形容惊慌——(          )

(11)形容冷漠——(          )

(12)形容专横——(          )

(13)形容无能——(          )

(14)形容亲密——(          )  

动画片《蓝猫淘气三千问》中讲述了这样一则故事：雨过天晴后，森林失火了，蓝猫赶到现场勘察，原来罪魁祸首竟是挂在树上的一颗颗水珠．原因 ______．

离合器压盘从安装到使用有（）压缩

A.一次

B.两次

C.三次

D.四次

Motherhood may make women smarter and may help prevent dementia in old age by bathing the brain in protective hormones, US reseachers reported on Thursday.

Tests on rats show that those who raise two or more litters of pups do considerably better in tests of memory and skills than rats who have no babies, and their brains show changes that suggest they may be protected against diseases such as Alzheimer’s. University of Richmond psychology professor Craig Kinsley believes his findings will translate into humans.

"Our research shows that the hormones of pregnancy are protecting the brain, including estrogen, which we know has many neuroprotective effects," Kinsley said.

"It’s rat data but humans are mammals just like these animals are mammals," he added in a telephone interview. "They go through pregnancy and hormonal changes. "

Kinsley said he hoped public health officials and researchers will look to see if having had children protects a woman from Alzheimer’s and other forms of age-related brain decline.

"When people think about pregnancy, they think about what happens to babies and the mother from the neck down," said Kinsley, who presented his findings to the annual meeting of the Society of Neuroscience in Orlando, Florida.

"They do not realize that hormones are washing on the brain. If you look at female animals who have never gone through pregnancy, they act differently toward young. But if she goes through pregnancy, she will sacrifice her life for her infant—that is a great change in her behavior that showed in genetic alterations to the brain. \

What can protect the brain of a woman according to the passage().

A. Estrogen.

B. The hormones of pregnancy.

C. More exercise.

D. Taking care of children.

排烟架/1P的日常检查内容有哪些？