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Do you look like your parents? What genetic traits(遗传特性) did your parents pass on to you? Was it their eye color or their height? It could be their sense of humor or their musical talent. Or maybe it was their fear of mathematics.

A research at Ohio State University in the US has found that genetics are partly responsible for children’s math skills and anxiety about math.

Scientists studied over 500 sets of twins to find out how genetic affect math anxiety. Over a period of 10 years, the twins completed math tests and filled out surveys about their levels of math anxiety. They found that fraternal twins (twins with different genetics) had different levels of skill and anxiety about math. Identical twins (twins with the same gene set) has similar levels.

This shows that people’s fear of math is partially affected by their genetic makeup(基因构造). Math anxiety has a strong effect on a child’s abilities. University of Chicago found math anxiety can cause the same feeling as being physically hurt.

This anxiety means that some students are not willing to study math as much as they should. Therefore, they become even worse at math and less confident in their skill. This only adds to their fear.

But if you’re bad at math, don’t try to blame(责怪) it on your parents. Math anxiety is till rare—genetic-factors explained about 40 percent of people’s math anxiety. The environment, including school and family, is also part of the equation(影响因素).

1．The underlined word “anxiety” in Paragraph 2 refers to a/an ________ feeling.

A．unpleasant

B．curious

C．relaxing

D．crazy

2．What did the researchers at Ohio State University find?

A．Parents can pass their eye color on to their children.

B．Children’s math skills are determined by their parents.

C．Math anxiety has something to do with genetics.

D．Fear of math is very common among twins.

3．What do we know from the story?

A．People are born with math anxiety.

B．There is no way to deal with math anxiety.

C．Parents should learn math well themselves.

D．Genetics is not the only cause for math anxiety.

4．According to the passage, what are responsible for children’s math anxiety?

A．Genetics.

B．The environment.

C．School and family.

D．All the above.

5．Which of the following is true?

A．Math anxiety is the same as being physically hurt.

B．The feeling caused by math anxiety is not different from that of being physically hurt.

C．People’s fear of math is totally affected by their genetic makeup.

D．Fraternal twins have the same genetics.