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问题 单项选择题

某妇，孕3产1，人流术后3个月未行经，基础体温呈双相型，无其他不适，其原因可能是

A．宫颈粘连

B．宫腔粘连

C．子宫内膜上皮层被破坏

D．子宫内膜的腺体层被破坏

E．子宫内膜的基底层被破坏

答案

参考答案：E

单项选择题

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 does the phrase "litters of pups" mean in the second paragraph

A. Baby rats.


B. Animals.
C. Old rats.



D. Grown-up rats.
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单项选择题

已知某设备原值60000元，税法规定残值率为10%，最终报废残值为5000元，该公司所得税税率为25%，则该设备最终报废由于残值带来的现金流入量为( )元。

A．5000

B．6000

C．250

D．5250
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