99-97+95-93+91-89+…+3-1=______.

题型:填空题

问题:

99-97+95-93+91-89+…+3-1=______.

考点:加法交换律和结合律
题型:填空题

阅读理解。

     Are you interested in country music? I like it very much! It will take me away for a while after I am

tired. The guitars and songs will take me to mountains and fields.

     Country music usually talks of everyday life and feelings. It's the spirit of America, easy to understand,

slow and simple.

      Country music developed in the Southern United States. It was the folk music of American

countryside. Many of songs tell about the lives of farmers.They talk about love, crops or death.

      The life of the countryside can be hard, so the words in country music are often sad. At first, people

played the music only at family parties. But it became more popular later. In the 1920s, people played

country songs on the radio, and they made them into records.

     When people in the countryside moved to towns and cities to look for work, they took their music

with them. Country music continued to change and became popular across America.

     John Denver was one of America's most famous country singers in the 1970s. His song "Take Me

home, Country Roads" is well-known and people still play it today.

1. Country music is usually about _____. [ ]

A. everyday life and feelings

B. farmers' feelings

C. the lives of workers

2. Country music developed _____. [ ]

A. in John Denver's city

B. in the Southern United States

C. in the Northern United States

3. People began to make country song records _____.[ ]

A. in the 1920s

B. in 1920

C. in the 1970s

4. Why did Country music become popular in America? [ ]

A. Because city people liked the music.

B. Because farmers moved to cities with their music and it continued to change.

C. Because country music talked about city people's lives.

5. Who is famous for the song "Take Me Home, Country Roads"? [ ]

A. A farmer in the countryside.

B. A person who moved to towns.

C. John Denver.

题型:填空题

下列各项费用中,属于动态投资部分的是()。

A.建筑安装工程费 

B.基本预备费 

C.建设期利息 

D.设备及工器具购置费

题型:填空题

患儿10个月,突然高热,烦躁,吃奶后频繁呕吐,入院就诊,查体:体温38℃,意识模糊,眼神呆滞,颈有抵抗,前囟隆起。

应考虑以下哪种疾病()

A.高热惊厥

B.颅内压增高

C.婴儿痉挛症

D.维生素D缺乏手足抽搦症

E.癫痫

题型:填空题

急性腹膜炎发生严重休克的主要因素为

A.水和电解质紊乱
B.血容量减少和吸收大量毒素
C.腹腔内有无原发病灶
D.发病年龄不同
E.腹膜有无刺激征

题型:填空题

含有"光活性物质"香豆素类化合物,可致日光性皮炎等不良反应的祛风湿药是()

A.秦艽

B.独活

C.五加皮

D.防己

E.雷公藤

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