下列除哪项外，其余都说明家鸽的外形与飞行生活相适应（） A.身体呈流线型 B.全身被 发布时间：2021-02-21 02:32 │ 来源：www.tikuol.com 题型：单项选择题 问题： 下列除哪项外，其余都说明家鸽的外形与飞行生活相适应（）A.身体呈流线型B.全身被覆羽毛C.身体分头、颈、躯干、四肢、尾五部分D.前肢变成翼，生有几排大型正羽
题型：单项选择题 完形填空。 Clothes are important in our life. Different people wear 1 clothes. Now let's 2 some people talking about clothes. Hello, my name is Betty. I started working this year, so I'm able to get new clothes more often 3 before. There are different people in my working place every day. If someone sees me in 4 once, I don't like to go out in it again. I like to wear bright colors and always dress up when I go to parties. I buy all kinds of clothes and I try to follow the latest way of 5 . Hi, I'm Jack. I don't have much to say about clothes. Shopping 6 clothes isn't really the way of lifeI'm interested in. Since I'm still at college, I don't really mind 7 . I have two jackets and I often wear 8 . I know little about the way of dressing. I don't like the serious look. My name is Alice. I'd like to say that my clothes have to be comfortable and make me 9 easy as soon as I put them on. Sometimes I buy clothes in some small markets—they're less expensive there. I go shopping for clothes about once a month. If I see 10 and fit for me, I would maybe go for it there and then. ( )1. A. the same ( )2. A. listen to ( )3. A. as ( )4. A. something ( )5. A. dress ( )6. A. of ( )7. A. what I wear ( )8. A. it ( )9. A. feel ( )10. A. something comfortableB. different B. hear B. like B. anything B. dressing B. in B. what do I wear B. them B. feels B. anything comfortableC. beautiful C. to listen to C. than C. nothing C. dresses C. for C. what I wore C. their C. feeling C. comfortable somethingD. comfortable D. to hear D. long D. everything D. to dress D. on D. what did I wear D. they D. to feel D. comfortable anything 查看答案
题型：单项选择题 请根据以下资料回答： 某种股票各种可能的投资收益率以及相应的概率如下表所示： 发生概率 投资收益率(%) 0.2 40 0.5 10 0.3 -8 假设市场组合收益率的标准差为12%，该股票的标准差为16.64%，该股票收益率与市场组合收益率的相关系数为0.6，则该股票的β系数为______。A．0.83B．0.74C．0.78D．0.81 查看答案