含有三个胚层组织成分的肿瘤叫做()。 A.错构瘤 B.间叶瘤 C.畸胎瘤 D.混合瘤

题型:单项选择题 A1/A2型题

问题:

含有三个胚层组织成分的肿瘤叫做()。

A.错构瘤

B.间叶瘤

C.畸胎瘤

D.混合瘤

E.迷离瘤

考点:肿瘤外科主治医师肿瘤学基础肿瘤学基础题库
题型:单项选择题 A1/A2型题

如图所示的电路中,电源电压恒定不变,当开关S闭合时( )  

A.电压表示数变小,电流表示数变小,灯变暗

B.电压表示数变大,电流表示数变大,灯变亮

C.电压表示数不变,电流表示数不变,灯的亮度不变

D.电压表示数不变,电流表示数变小,灯变暗

题型:单项选择题 A1/A2型题

     Every culture has a recognized point when a child becomes an adult, when rules must be followed

and tests passed.

     In China, although teenagers can get their ID cards at 16, many only see themselves as an adult

when they are 18. In the US, where everyone drives, the main step to the freedom of adult life is

learning to drive. At 16, American teens take their driving test. When they have their license, they drive

into the grownup world. 

     "Nobody wants to ride the cheese bus to school," said Eleanor Fulham, 17. She brought the

pressure back to memory, especially for kids from wealthier families. "It's like you're not cool if you

don't have a car," she said.

     According to recent research, 41% of 16 to 19yearolds in the US own cars, up from 23% in 1985.  

Although, most of these cars are bought by parents, some teens get parttime jobs to help pay.

     Not all families can afford cars for their children. In cities with subways and limited parking, some

teenagers don't want them. But in rich suburban areas without subways, and where bicycles are more

for fun than transportation, it is strange for a teenager not to have a car.

     But police say 16yearolds have almost three times more accidents than 18 to 19yearolds. This has

made many parents pause before letting their kids drive.

     Julie Sussman, of Virginia, decided that her son Chad, 15, will wait until he is 17 to apply for his

learner's permit.

     Chad said he has accepted his parents' decision, although it has caused some teasing from his

friends. "They say that I am unlucky," he said, "But I'd rather be alive than driving, and I don't really

trust my friends on the road, either."

     In China as more families get cars, more 18yearolds learn to drive. Will this become a big step to

becoming an adult?

1. Which may serve as the best title of the article?

A. Cars Helping You to GrowUp

B. Driving into the GrownUp World

C. Teenagers' Driving in America

D. Recognized Point of Becoming an Adult

2. 16yearold drivers have more accidents possibly because________.

A. they want to show themselves off

B. they are never experienced drivers

C. older people always drive better

D. they never drive carefully on the road

3. Which may NOT be taken into consideration when deciding whether to buy a car?

A. How well off the family is.

B. Whether the kid is old enough.

C. What traffic condition there is around.

D. Whether it's practically needed.

题型:单项选择题 A1/A2型题

交换机端口可以分为半双工和全双工,请问,对于100Mbps的全双工端口,端口带宽为().

A.100Mbps

B.200Mbps

C.50Mbps

D.400Mbps

题型:单项选择题 A1/A2型题

我国的经济发展不平衡对养老保险体系的影响表现在()。

①城乡发展不平衡导致养老保险体系的二元格局

②地区发展不平衡给养老保险制度统筹层次的提高带来压力

③经济发展不平衡对养老保险的转移提出要求

④经济发展不平衡导致商业养老保险发展不平衡

A.①②③

B.①②④

C.②③④

D.①②③④

题型:单项选择题 A1/A2型题

工具、器具及生产家具购置费以( )为计算基数。

A.固定资产额

B.建筑工程费

C.安装工程费

D.设备购置费

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