— How clean and tidy your classroom is!

题型:选择题

问题:

— How clean and tidy your classroom is! 

— Thank you. It ______ every day. [ ]

A. is cleaned

B. was cleaned

C. was cleaning

D. is cleaning

考点:被动语态
题型:选择题

链内每肽键羰基氧和相隔三个肽键亚氨基氢形成氢键的是()

A.α-螺旋

B.β-折叠

C.β-转角

D.无规卷曲

E.π-螺旋

题型:选择题
给下列句子排列顺序,最恰当的一项是

[ ]

①清风徐徐,树枝摇曳,斑驳的光影洒落在地上和小狗身上 。
②绿阴下是一间小小的柴房。
③这就构成一幅盛夏城郊小院图,生动而又富有情趣。
④柴房前,主人在吸着烟斗,一只小狗闲适地躺在一旁。
⑤窗前一片浓浓的绿阴。
A.③⑤④②①       
B.⑤④②①③       
C.③⑤②④①       
D.⑤②④①③
题型:选择题

下面对项目管理组织结构的基本形式的说法错误的是()。

A.弱矩阵型组织结构保留了项目的职能型组织结构的主要特征

B.平衡矩阵型组织结构是对弱矩阵型组织结构的改进

C.平衡矩阵型组织结构与弱矩阵型组织结构相比,更有利于项目管理

D.强矩阵型组织结构具有功能型组织结构的主要特征

题型:选择题

阅读理解。

     I found a website that has changed my life. The website is wishuponahero.com and it is all about people

helping others, not expecting anything in return.

     I am a single mom with a son. My son's 12th birthday was on October 29th, 2007. Knowing that I didn't

have money to buy him a birthday gift had broken my heart. So, I decided to post a wish on wishuponahero.

com for people to send my son birthday cards.

     Many cards just started coming in and my little son was very excited and this went on for about three

weeks. The smile on his face and the sparkle (闪光) in his eyes brought me to tears.

     Then, at the end of November, he started thinking about Christmas and he already knew that there would

not be a tree for him because we didn't have enough money. However it didn't matter to him. All he talked

about was how much he wanted to make other children smile. So he decided to earn money to buy Christmas

cards and send them to other children from poor families. My son went out daily and raked leaves and walked

some dogs to make money. Not only did he buy cards, but he also made enough money to buy all the stamps

and lollipops to send with the cards. He sent out about 100 cards. Doing this brought him the same smile and

sparkle in his eyes as the birthday cards that he received did.

1. The single mother posted a wish on wishuponahero.com because _____. [ ]

A. she wanted to send her son a card on the website

B. she liked the website very much

C. she was too poor to buy her son a birthday present

D. she thought her son would like the website very much

2. What did the son do for other poor children on Christmas? [ ]

A. He sent them his own Christmas tree.

B. He earned money to send them cards with candy.

C. He raked leaves and walked dogs for them.

D. He made some lollipops to make them smile.

3. Why was there sparkle in the son's eyes at the end of the story? [ ]

A. He thought of his birthday cards and other good people.

B. He earned a lot of money by himself.

C. He thought of what his mother had done for him.

D. He was glad and excited to help other poor children.

4. What can we conclude from the story? [ ]

A. Surfing the Internet is of great use.

B. One should take care of his or her children.

C. People can ask for help from wishuponahero.com.

D. Learning to give makes one's life more meaningful.

题型:选择题

二维超声心动图胸骨旁长轴观可见:()

A.主动脉瓣及肺动脉瓣

B.主动脉及二尖瓣

C.室间隔与房间隔

D.二尖瓣与三尖瓣

E.主肺动脉与房间隔

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