等腰三角形的一个外角是80°,则它的底角等于() A.40° B.100° C.

题型:选择题

问题:

等腰三角形的一个外角是80°,则它的底角等于(     )

A.40°

B.100°

C.50°

D.40°或100°

考点:相似多边形的性质相似三角形的判定相似三角形的性质相似三角形的应用
题型:选择题

阅读理解

       My cat's name is Lucy. She is a very pretty cat. Her hair is black and yellow. She has four children.

She is very happy with her young babies.

       The four children are not all like Lucy very much. The biggest (最大的) child is black. It is black

with white feet and white ears. Two children are like their mother. They are black. My daughter says,

"Aren't they pretty? Can't I have the black and white one? Isn't he a tomcat (雄猫)?" I say, "I don't

know, but I know the yellow and black ones are female (雌性的)." "Are they? How do you know?"

"For (因为) they are yellow and black, but tomcats never (从不) have that. I'll tell you something

about that. Listen…"

1. Lucy is a   _____  .  

A. cat          

B. student        

C. boy          

D. girl

2. The writer (作者) has   _____   cats:    ____   baby cats and     ____ mother cat.

A. four, five, one    

B. five, four, one      

C. one, three, a      

D. two, a, four

3. 文中划线单词"black and yellow"的意思是:

A. 又黑又黄        

B. 不黑不黄        

C. 黑黄不分        

D. 黑黄相间

4. The biggest baby is    ____  with _____   feet and     ____ ears.

A. black, white, yellow                  

B. black, yellow, white  

C. black, black and yellow, red            

D. black, white, white

5. The story tells us the female cat's hair is _____   .

A. yellow and black              

B. white and yellow  

C. black and white              

D. yellow with one white ear

题型:选择题
一架客机从北京飞往上海,飞行速度和所用的时间(  )
A.成正比例B.成反比例C.不成比例
题型:选择题

市价委托的缺点是只有在委托执行后才知道实际的执行价格

题型:选择题

你做的比要求的更多吗______

A.从不
B.较少
C.较多
D.总是

题型:选择题

现存古代琴曲中唯一一首具有杀伐斗气气氛的作品是()。

A.潇湘水云

B.酒狂

C.广陵散

D.破阵乐

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