【名词&注释】
水蒸气(steam)、成功率(success rate)、不存在(there is no)、竞争对手(competitor)、心目中、窗玻璃(window glass)、站稳脚跟(firm foothold)、一年四季(at all seasons)
[多选题]天津地区一年四季(at all seasons)分明，严冬的早晨在窗玻璃(window glass)上会出现“冰花"。下列说法正确的是
A. 冰花主要是水凝固形成的
B. 冰花主要是水蒸气凝华形成的
C. 冰花出现在窗玻璃(window glass)内侧
D. 冰花出现在窗玻璃(window glass)外侧
查看答案&解析
举一反三：
[单选题]对于一个处于平衡状态的生态系统来说，下列哪种现象不存在( )
A. 物质不断循环
B. 能量不断流动
C. 组成成分相对稳定
D. 生物个体数量不变
[单选题]（ ）是一种避开强有力的竞争对手的市场定位。其优点是能够迅速在市场上站稳脚跟(firm foothold)，并能在消费者或用户心目中迅速树立起一种形象。由于这种定位方式市场风险较少，成功率较高，常常为多数企业所采用。
A. 市场定位
B. 避强定位
C. 迎头定位
D. 利润定位
[单选题]—It’s very ________ of you to work out the problem for me. 学科网 —That’s all right.
—It’s very ________ of you to work out the problem for me.
—That’s all right.
A. kind B．clever C．necessary
[单选题]我国有文字可考的历史始于
A. 夏朝
B. 商朝
C. 秦朝
D. 东晋
[单选题]12．
A. spends
B. costs
C. takes
D. pays
[单选题]33．_________is on my desk．
A. My clock
B. Jim's old watch
C. My new watch
D. My bag
[单选题]BMr Jackson has a happy family． His wife stopped working after they married．They have two children． One is a daughter，Susan，and the other is a son， Bill．Susan works in a famous university and Bill is a good policeman．' They are both married and they have their own fami- lies． And Mr Jackson became the manager of a company． He can get much money every year．But people find the man always look worried this month． And he-s much fatter than be- fore． Sometimes he-s out of breath when he goes up to his office on the second floor．He often complains that he can't sleep well in the night and eels tired． So his friends asked him to go to see a doctor．"Medicine can-t help you， Mr Jackson， the doctor said after he looked him over． "Do more exercise if you want to live longer． ""But what sport can I do?""Playing golf(失球)． It’ll be useful to you． "The man， of course， has to listen to the doctor． He goes to play golf on weekends． He enjoys himself there， but he can-t learn it well．One day the ball dropped on an anthill(蚁丘)． After many swings(挥动球杆） he demol- ished(毁坏) the anthill， but he still couldn't hit the ball． And only two ants were alive． Soone of them said to the other， "We'd better be on the ball if we don-t want to die!"
A. Mr Jackson has___________ ．
B. a big family
C. a small company
D. two children
E. two houses
[单选题]22． We can see ________in the room．
A. one bed
B. two beds
C. Lucy's bed
D. Lily's bed
[单选题]13．I'm going skating． Would you like to go with_________?
A. me
B. I
C. my
D. mine
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