已知(x﹣2)2+|y+1|=0,则x+y的值是[ ] A.1 B.﹣1 C.﹣

题型:选择题

问题:

已知(x﹣2)2+|y+1|=0,则x+y的值是[ ]

A.1

B.﹣1

C.﹣3

D.3

考点:整式的加减绝对值有理数的乘方
题型:选择题

高血压病时原发性颗粒性固缩肾的形成主要是由于()。

A.肾间质结缔组织增生

B.肾小球纤维化

C.肾小管坏死

D.肾小球入球小动脉硬化所致的肾单位萎缩

E.肾小球代偿性肥大

题型:选择题

The moment I met you, I _____ you though I hadn’t seen you for about ten years.

A.saw

B.knew

C.recognized

D.watched

题型:选择题

下列划线词的活用现象与其它三项不同的一项是 [ ]

A.侣鱼虾而麋鹿

B.余佩之陆离

C.方其荆州

D.火尚足以

题型:选择题

Many immigrants to the United States find the decision to seek better lives for their families in America can have an unexpected and tragic consequence. Deep differences with their children develop over language and culture.
"Many immigrants arrive here without much education. Their kids soon gain language skills and also street marts on how to live in America, leaving the parents at a disadvantage, " Ileana, Roses, pastor of a Methodist church group operating in Virginia, said.
"Not only that but they find they cannot relate to children who quickly absorb American culture, " she said.
According to the US Census Bureau, the number of foreign born or first generation Americans reached 55 million last year, a record one in five of the total population.
A government survey of 922 immigrants in 2000 found that nearly 40 percent of those who had been in the United States for more than 15 years would still like to take English classes if they had the time.
Two thirds of low income households depended on their children for translation.
Psychologists and sociologists say parents can lose their position of authority in a family as a result and the effects of that can be far-reaching.
Children exposed to American pop culture that glorifies youth and sexuality often rebel when their parents try to impose the conservative values they brought with them.
"Americanization erodes all important aspects of parenting, " said Richard Weissbourd, who teaches education at Harvard University.
"I feel a part of me is dying with my children. They don’t listen to my music. I have to play it on Sunday morning when they are not around, " said an immigrant.

Which of the following is true according to the passage

A. All the immigrants had expected the troubles they would meet before they went to the US.
B. Two thirds of immigrant families are low income households.
C. American culture shows a spirit against conservative social and cultural values.
D. American pop culture puts the immigrant families at a disadvantage.

题型:选择题

水冷壁管计算壁温等于()℃。

A.tbh+40

B.tbh+50

C.tbh+60

D.tbh+70

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