问题
选择题
太阳活动最激烈的显示是
A．太阳黑子
B．耀斑
C．太阳风
D．日珥爆发
答案
答案：B
本题考查太阳活动。黑子的大小和多少是太阳活动强弱的标志，耀斑爆发是太阳活动最激烈的显示。
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太阳活动最激烈的显示是
A．太阳黑子
B．耀斑
C．太阳风
D．日珥爆发
答案：B
本题考查太阳活动。黑子的大小和多少是太阳活动强弱的标志，耀斑爆发是太阳活动最激烈的显示。
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| There was a woman in Detroit ,who had two sons. She was worried about them, especially the younger one, Ben, because he was not doing well in school. Boys in his class made jokes about him because he seemed so __1_ . The mother _2_ that she herself would have to get her sons to do better in school. She told them to go to the Detroit Public Library to read a book a week and do a book report for her. One day, in Ben's _3 , the teacher held up a rock and asked if anyone knew it. Ben put up his hand and the teacher let him _4_ . "Why did Ben put up his hand?" His classmates wondered. "He _5_ said anything. What could he possibly want to say? Well, Ben not only _6 the rock, but also said a lot about it. He named other rocks in its group and even knew _7 the teacher had found it. The teacher and the students were _8_ . Ben had learned all this from doing one of his book _9_ . Ben later went on to the _10 of his class. When he finished high school, he went to Yale University and at last became one of the best doctors in the United States.
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