1 . When I was a kid, my sister and I would fight all the time over nearly everything. But as we grew older, our bond strengthened by sharing secrets, offering advice and trading clothes. Having a sister by my side while growing up taught me many lessons about the unique bond.

And now, thanks to an 8-year long study that’s making the rounds on the Internet again, science is confirming what I know is true. In the study, researchers discovered that having an older or younger sister can help ease the anxiety for kids between the ages of 10 and 14 years. They also found that people with sisters can “learn how to make up and to have control over their emotions again, which are skills that undoubtedly serve children well.

The revival of this study actually comes on the heels of another newer study, which shows that it’s not just the older kids and parents who influence and shape children as they grow. It turns out that younger siblings(兄弟姐妹) do too, and what’s more, they may also give their older siblings a greater chance of developing empathy (同情).

The Canadian study followed 452 pairs of siblings, all between a year-and-a-half and 4 years old. The researchers found that having a younger sibling increased the older sibling's level of empathy.

This research confirms that sisters are pretty amazing in making the world a much lovely place. As the mom of two boys, I often wonder what kinds of lessons they will learn from their younger sister. Perhaps they will be the same lessons I learned from mine that cooler heads always win. This study gives me hope that all those endless arguments between my kids may actually be laying the groundwork for conflict-settlement skills.

1. What can we learn from the study?

A．Children under four develop empathy fastest.

B．It is normal for siblings to quarrel.

C．Having siblings is not always a headache.

D．Having sisters is helpful to mental health.

2. What does the underlined word "revival"in Paragraph 3 probably mean?

A．Result	B．Beginning.
C．Reappearance.	D．Significance.

3. What can we learn about the author’s children?

A．They love their mom very much.

B．They have a higher level of empathy.

C．They often quarrel with one another.

D．They have learned the same lessons as the the author.

4. What’s the main idea of the passage?

A．Siblings have a unique bond.

B．Siblings have something in common.

C．Having siblings is good to children.

D．Children having siblings are considerate.