What can be learned from the study?

A．Cats take food no matter who feeds them.

B．Cats refuse food from unhelpful strangers.

C．Dogs refuse food from those who anger them.

D．Dogs take food no matter how they are treated

查看答案及解析进入在线模考

参考答案

答案解析

事实细节题。
文章第四段提到，研究表明，狗不会接受拒绝帮助它们主人的陌生人提供的食物，而猫并没有偏爱为其主人提供帮助的人，也没有回避拒绝为其主人提供帮助的人。显然，对猫来说，食物就是食物。由此可知，无论谁给猫喂食，猫都会接受。故选A。

你可能感兴趣的试题

1 What should we do to better understand cats, according to the last paragraph?

A．To treat them as friends.

B．To compare them with dogs.

C．To regard them as animals.

D．To care about their behavior

查看解析在线模考

2 根据下面资料，回答题
Scientists have shown that exercise is linked to brain changes throughout all stages of life and can help the brain develop and stay healthy. Babies, for example, need regular exercise to form connections in the brain. In children, research suggests that exercise improves attention, focus and school performance. In the elderly, exercise has been shown to help slow memory loss
Then how does exercise help the brain? Over the last 20 years, scientists have learned that exercise can help keep the mind sharp in a number of ways. Exercise improves blood flow to the brain. The blood carries oxygen, contributing to more efficient connections between brain cells. Increasing blood flow is one way that exercise can improve mental abilities. The positive effects of exercise on the brain can be seen in babies, pre-teenagers and adults
Babies are in near-constant movement, which is extremely important for development. This movement not only strengthens their muscles, but also helps their brains form connections. The process continues throughout life but is most intense in infancy (婴儿期) and toddlerhood (学步期), when children are mastering brand-new skills like sitting, standing, walking, running and jumping
Exercise is also healthy for pre-teenagers' brains. In fact, some research suggests that regular exercise can improve school performance. A study found that the effects depended on how much kids exercised. The more days the children attended the exercise program, the more their focusimproved.
Finally, exercise helps keep the mind sharp during adulthood. Research suggests exercise can increase the size of the hippocampus, an important area of the brain, which becomes smaller with age,and can increase levels of a protein (蛋白质) that aids the growth of new brain cells. This can help prevent older adults from losing mental abilities and memory
How does exercise help the elderly?

A．By improving attention.

B．By slowing memory loss.

C．By connecting with others.

D．By controlling cell growth.

查看解析在线模考

3 How does exercise sharpen the mind according to Para.2?

A．By increasing the brain size.

B．By decreasing the protein level.

C．By extending the time of concentration.

D．By strengthening brain cells' connections.

查看解析在线模考