已知命题p:∃x∈R,mx2+1≤0,命题q:∀x∈R,x2+mx+1>0,若p

题型:选择题

问题:

已知命题p:∃x∈R,mx2+1≤0,命题q:∀x∈R,x2+mx+1>0,若p∧q为真命题,则实数m的取值范围是(  )

A.(-∞,-2)

B.[-2,0)

C.(-2,0)

D.(0,2)

考点:简单的逻辑联结词
题型:选择题

Here are some facts about homes in the United States and the people who live in them. In the early 1990s, about 50% of the Americans own their homes and the rest rent(租) their homes. The rented homes are usually apartments(公寓).

74% of the people in the US make their homes in or around cities. 26% live in the country. Dogs live in about 40% of all homes in the US. About half that number have cats.

Families in the US are becoming smaller. On the average(平均),2.64 people lived in a home in the early 1990s. In 1960, the average was 3.5.

Half of the teenagers in the US have their own bedrooms.

An American moves, on the average,twelve times in his or her life. In Japan, a person moves about five times, and in England a person moves eight times.

小题1:According to (根据) the passage ,where do most Americans live?

A.In the countries.

B.Around the farms.

C.In the towns near the sea.

D.In or around the cities.小题2: How many American families own a cat?

A.40%

B.26%

C.74%

D.20%小题3:Families in the US are              .

A.becoming bigger

B.becoming smaller

C.no change

D.not sure小题4:Do all the children in the US have their own bedrooms?

A.Yes, they do.

B.No. Half of them do.

C.No, 5% of the them do.

D.I don’t know.小题5:The passage is about _________________.

A.people and homes in the United States

B.dogs and cats in American homes

C.teenagers’ bedrooms

D.moving house

题型:选择题

2011年2月27日,温 * * * * 对开发商提出告诫:房地产商作为社会成员,应对社会尽到应有的责任,身上应该流着道德的血液。

试用有关唯物史观知识分析:

(1)为什么 * * 要求房地产商“应该流着道德的血液”?(2)房地产商怎么才能做到“流着道德的血液”?(10分)

题型:选择题

不符合急单白血病细胞非特异性酯酶染色结果的是()

A.AS-DNCE染色呈阳性

B.α-NAE染色呈阳性

C.AS-DNAE染色呈阳性

D.α-NBE染色呈阳性

E.以上都不是

题型:选择题

患者,女,64岁。耳中如蝉鸣4年,时作时止,劳累则加剧,按之鸣声减弱。治疗应首选()

A.太阳、听会、角孙

B.丘墟、足窍阴、外关

C.太阳、听会、合谷

D.听会、侠溪、中渚

E.太溪、照海、听宫

题型:选择题

因果矩阵的作用是什么?

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