题干

安全教育已越来越引起学校和社会各界的高度重视并开展了一系列丰富多彩的教育活动.某中学在一次关于家庭用电的“对”、“错”抢答比赛中,提出以下说法,其中应回答“对”的是(  )

A:如果发生了触电事故,要立即切断电源

B:若没有保险丝,可用铜丝代替

C:控制家用电器的开关应安装在零线上

D:电饭煲用三脚插头和三孔插座,是为了利用三角形的稳定性和美观性

上一题 下一题 0.0难度 选择题 更新时间:2016-04-20 06:29:08

答案(点此获取答案解析)

A

同类题3

阅读理解

    It's generally believed that people act the way they do because of their personalities and attitudes. They recycle their garbage because they care about the environment. They pay $5 for a caramel brulee latte because they like expensive coffee drinks.

    It's undeniable that behavior comes from our inner dispositions(性情), but in many instances we also draw inferences about who we are, as suggested by the social psychologist Daryl Bern, by observing our own behavior. We can be strangers to ourselves. If we knew our own minds, why should we need to guess what our preferences are from our behavior? If our minds were an open book, we would know exactly how much we care about the environment or like lattes. Actually, we often need to look to our behavior to figure out who we are.

    Moreover, we don't just use our behavior to learn about our particular types of character — we infer characters that weren't there before. Our behavior is often shaped by little pressures around us, which we fail to recognize. Maybe we recycle because our wives and neighbors would disapprove if we didn't. Maybe we buy lattes in order to impress the people around us. We should not mistakenly believe that we always behave as a result of some inner disposition.

    Whatever pressures there can be or inferences one can make, people become what they do, though it may not be in compliance(符合) with their true desires. Therefore, we should all bear in mind Kurt Vonnegut's advice: “We are what we pretend to be, so we must be careful about what we pretend to be.”

同类题4

阅读下列短文,完成下列小题。

    “Save the whales!” That's what the picture on Jake Smith's bedroom wall said. Jake liked having a picture that said something important: that showed he cared. He just never expected to get a chance to save a real whale, one right in his own neighbourhood.

    It was a Saturday morning when the newspaper first reported the whales' coming. A group of the animals were swimming close to the beach in Jake's hometown. All the local people rushed out to the beach to see them. They were expecting a beautiful show, better than a movie, but nothing they’d have to do anything about.

    Then one whale swam in the direction, directly towards land. It came in with the waves, and when the waves receded. Its huge body on the sand. Suddenly, Jake and his family and all the others were no longer sightseers. They had to become rescuers. A few people ran towards the animal. They pushed and tried to force the whale back into the water, but it was no use.

    An animal rescue service team soon arrived in a truck with heavy lifting machinery, to help move the animal. Jack and his family couldn't do much on the beach, so they went back to their house and made sandwiches and hot tea for the rescuers. At least, Jake thought, they could help in some way.

    Back at the beach, they offered the food to the rescuers and were happy to see that it was needed. It was getting dark. Some people lined up their cars along the beach and shined the headlights on the sand. The rescuers would not give up. After trying many times they were finally able to lift the whale into the water. Everyone cheered when it headed out to sea. It swam out about a mile and then disappeared for a moment under the sea. Then, in what looked like a jump of joy, it rose high above the water—a thank-you to those who had worked so hard to save his life.