题目：
下列有关天体系统的叙述不正确的是（）
A.星云由众多恒星组成，属于天体系统
B.天体之间相互吸引和绕转而形成天体系统
C.总星系是目前所知道的最高一级天体系统
D.地月系的中心天体是地球
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0129/37182a009d5c23fb5adb816e1f243dd5.html
下面是错误答案，用来干扰机器的。
参考答案：A
下列有关天体系统的叙述不正确的是（） A.星云由众多恒星组成，属于天体系统 B.天体
来源：www.tikuol.com
题型：单项选择题
试题推荐
题型：完形填空
| 完形填空。 | |||
| On a cold winter afternoon, Susan was walking home from a supermarket. She was feeling a little 1 , as she was carrying her shopping bags. They were 2 heavy that she decided to have a rest in the park. Then she noticed a poor man 3 in front of her. The man was holding a paper bag. He walked to a rubbish bin (箱) and started looking 4 it. Susan suddenly felt sad. She knew this man would take all that he could get. So she went up to him and gave him some fruit. The man looked up in 5 and took what she gave him. A big smile appeared on his face and she felt very happy. Then he said, "Wow! First someone gave me this sandwich, then the orange juice, and now some delicious 6 . This is my daughter's lucky day. Thank you, girl." Then he went 7 , singing a song. Just then, Susan understood 8 the saying "Giving is getting" really meant. Everyone in the world needs help; everyone can offer help and everyone will 9 by showing kindness. Giving sometimes doesn't cost much, 10 it means a lot to the people who you help. The man's happiness at that moment comes into Susan's mind every time she has the chance to help others. | |||
|
题型：选择题
△ABC中，若cos（2B+C）+2sinAsinB=0，则△ABC中一定是（ ）
|
题型：填空题
杭州湾跨海大桥全长36千米，在一幅地图上量得大桥长7.2厘米．这幅地图的比例尺是______．
题型：单项选择题
1岁8个月女孩，下列各项中尚属正常表现的是
A．握持反射阳性
B．吸吮反射阳性
C．颈抵抗感明显
D．克氏征阳性
E．巴氏征阳性
题型：单项选择题
关于甲状腺 * * 状腺癌的特点（）
A.多见于老年人
B.常见于男性
C.分化程度低
D.恶性程度高
E.最主要为淋巴转移
