为了保证工业上使用的钢具有足够的强度，并且有一定的塑性和韧性，钢中的含碳量一般都不超
题型：单项选择题
问题：
为了保证工业上使用的钢具有足够的强度，并且有一定的塑性和韧性，钢中的含碳量一般都不超过（）
A.1.40%
B.0.80%
C.0.50%
题型：单项选择题
根据短文内容完成下列句子
Barbie Doll is very famous in the world. After more than 50 years, Barbie is still popular among
(在......中) girls all over the world: But now the makers of Barbie show their first black dolls to people.
These new black Barbie Dolls are different from the old ones. They have fuller lips(更丰满的嘴唇)
and a wider nose. They look like black girls very much. So people call them the real black Barbie Dolls.
The designer(设计师) of the black Barbie Dolls is also black.”I want my daughter and other black
children to know that black is beautiful," she said.
1. Barbie Doll is very __________ in the world.
2. Barbie Doll is popular among __________ around the world.
3. The black Barbie Dolls look like __________ very much.
4. The new Barbie Dolls have __________ lips and a __________ nose.
5. The designer of the black Barbie Dolls is a__________ woman.