There is a saying that"Never put off unt

题型:选择题

问题:

There is a saying that      "Never put off until tomorrow what you can do today."

A.will go

B.has gone

C.is going

D.goes

考点:一般现在时将来进行时过去完成进行时过去将来时的被动语态
题型:选择题

已知:a+b=4,ab=1.

求:(1)(a﹣b)2的值;    (2)a5b﹣2a4b4+ab5的值.

题型:选择题

阅读理解。

     Of all the folk artists in the United States the best known of the twentieth century is certainly Grandma

Moses--Anna Mary Robertson Moses (1860-1961). She was also the most successful within her lifetime

and her work was reproduced on greeting cards and in prints. As with many folk artists, her career as a

painter started late in life, at the age of 67, but she continued painting until her death at the age of 10l, so

her active painting life still lasted over 34 years.

     Her subjects are based on the New England countryside. Many of her early paintings are copies of, or

use sections from, prints by Currier and Ives that she then recreated in her own way. In her paintings the

figures became more stylized and the landscapes less naturalistic. Her painting was preceded (优先) by the

production of landscapes in needlework. The images, however, continued the same, and she remade some

of her needlework landscapes in paint at a later date.

     From these early sources she began to compose original paintings such as Housick Falls, New York in

Winter (1944) that relied on her surroundings and her memories of country life and activities; these paintings

show her increasing technical ability. By the 1940's her work had become a marketable commodity and

collectors created a demand for her paintings.

     Like many painters of the nineteenth and twentieth centuries, Grandma Moses made use of photographs

for information, for figures, for landscapes, and for buildings, but her work, especially that of her later years,

was not a simple copying of these but compositions using them as source material. Her output was amazing,

and consequently her work is of varying quality. Her paintings place her among the top folk painters of the

nineteenth and twentieth centuries.

1. What is the main topic of the passage?

A. The painting materials used by Grandma Moses.

B. The major artistic influences on Grandma Moses.

C. The folk art of Grandma Moses.

D. The life of Grandma Moses.

2. According to the passage, Grandma Moses started her painting career ____.

A. without much success

B. in her sixties

C. after much study

D. by producing greeting cards

3. Why does the author mention Currier and Ives in the second paragraph?

A. They are folk artists.

B. They collected many of Grandma Moses' paintings.

C. They made calendars from Grandma Moses' landscapes.

D. Grandma Moses based some paintings on their work.

4. According to the passage, Grandma Moses switched (转变) from needlework to painting because of ____.

A. her desire to create landscapes

B. the public's interest in painting

C. her need to make money

D. a physical condition that affected her

题型:选择题

下列关于甲醇加注泵流量计堵塞导致计量不准的处理方法正确的是()。

A.关小甲醇加注排量,并关小流量计出口阀门,待压力升高后突然开大流量计出口阀,利用压差对流量计进行冲洗

B.关小甲醇加注排量

C.关小流量计出口阀门

D.可通过铁锤敲击、震动流量计

题型:选择题

某土层载荷试验实测承载力特征值分别为280kPa,290kPa,305kPa该土层地基承载力特值不应取( )。

A.a (B) 285

题型:选择题

23岁男性农民,11月份因发热、头痛、呕吐三天为主诉入院。体检:面颈部潮红,双腋下少许出血点,化验:尿常规蛋白(什)红细胞3—10个/HP,末梢血象:WBC23.0×109/L,异型淋巴10%,PLT48×109/L。(以下2题共用题干)

该患者的诊断可能为( )。

A.流行性脑脊髓膜炎

B.斑疹伤寒

C.流行性出血热

D.钩端螺旋体病

E.败血症

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