计算:(-2)3÷8-2×(-3)-(-1)2010.

题型:解答题

问题:

计算:(-2)3÷8-2×(-3)-(-1)2010

考点:有理数的混合运算
题型:解答题

阅读理解

       Are you looking for something fun and would you like to help other people in your spare time?Then

join us to be a volunteer(志愿者).

       We are a non-profit organization(非盈利性组织). We have volunteer jobs for people of all ages.

Anyone, from twelve-year-old children to people in their 80s, can become a volunteer.

       You can help people in many ways. Schools need help with taking care of children when their

parents are working. Hospitals need volunteers to look after children when their parents see a doctor.

Animal lovers can help take care of those dogs and cats without homes. There is something

for everyone.

       "As a volunteer, I don't want to get anything. Seeing the children's happy faces, I am happy, too.

"says Carlos Domingo, an old woman of 62.

       If everyone helps out a bit, we'll have a better world to live in. Are you interested in being a

volunteer ? Call us on 1-800-555-5756, or visit our website:www. activol. com.

1. What kind of people can become volunteers?

A. Only children.

B. From 12-year-old people to people in their 80s.

C. Only old people.

D. Only students and teachers.

2. _______ need help.

A. Animals

B. Nobody

C. Volunteers

D. Many people

3. Volunteers want to get _______ when they help others.

A. everything

B. money

C. nothing

D. computers

题型:解答题

32. Unless ____ regularly, the plants will not ____ in early spring.

A.water; flower

B.watering; be flowering

C.watered; flower

D.watered; be flowered

题型:解答题
计算(化简):
(1)(
2
)0-(
1
3
)-4×(-
1
3
)2-(-2)3

(2)(-2x)3÷(4x)-3x(1-x)
题型:解答题

利用下列反应制取氧气,其中反应快、能耗少、污染少、操作简便的是(  )

A.2KClO3

MnO2
.
2KCl+3O2

B.2H2O2

 MnO2 
.
 
2H2O↑+O2

C.2KMnO4

  △  
.
 
K2MnO4+MnO2+O2

D.2H2O

 通电 
.
 
2H2↑+O2

题型:解答题

能刺激产生单核细胞的细胞因子是()

A.UF

B.G-CSF

C.M-CSF

D.SCF

E.EPO

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