患者，女性，66岁，缺失，进行可摘局部义齿修复，基牙为，舌侧牙槽嵴为垂直型。采用大连接杆连接，其中向中舌侧倾斜，其余基牙正常。

上可采用

A:固定卡环 B:双臂卡环 C:联合卡环 D:对半卡环 E:环形卡环

将M238电源信号灯模块上的S2电门设置到“TEST”位置，其作用是：（）

A:对电源系统进行自检 B:对灯光系统进行自检查 C:验证M238模块上的指示灯灯泡可用 D:验证指示灯对应的电源系统供电正常

患者，男，8岁7个月，安氏Ⅲ类错病例，前牙反，上颌发育不良，侧面中部外形呈新月凹形。 该矫治器的组成不包括（）

A:垫 B:面弓 C:颏兜 D:面部牵引支架 E:口内矫治器

在一次象棋比赛中，共有n名选手参加，每位选手都与其他选手恰好比赛一局。每局比赛胜者得2分，负者得0分，平局两位选手各得1分。今有四位同学统计了全部选手的得分总和，分别是238，239，240，242，经核实只有一位同学的统计数据是正确的，正确的数据是（）。

A:238 B:239 C:240 D:242

118，199，226，( )，238

A:228 B:230 C:232 D:235

BEIJING—NO Car Day was first started by 34 cities in France on September 22,1998. It was started to protect the environment. By now, more than 1000 cities around the world have had a No Car Day.
The first No Car Day in China was in Chengdu in 2001. Other cities,including Taipei, Shanghai and Wuhan, also support (支持) the day.
In Beijing,more and more people are joiningin the activity. It asks drivers to leave their cars at home for one day each month and walk or ride a bike to work. It also calls on Beijingers not to use cars on June 5 ( Word Environment Day). The slogan (口号) for the day is, "If we drive for one less day,we can have one more nice day. "
So far, more than 200000 drivers have shown their support. "We can’ t control the weather, but we can choose not to drive, "said Wu Zonghua, a car club chairman. Beijing is trying to have 238 blue sky days this year. In the first quarter of this year, Beijing only had 52 blue sky days. This was 11 days less than the number for the same period last year. Much of the dust(灰尘) comes from the desert(沙漠). But cars cause most of the air pollution(污染). We must do more for No Car Day.
According to the passage there were______blue sky days in the first quarter of last year in Beijing.

A:52 B:63 C:41 D:238

BEIJING—NO Car Day was first started by 34 cities in France on September 22,1998. It was started to protect the environment. By now, more than 1000 cities around the world have had a No Car Day.
The first No Car Day in China was in Chengdu in 2001. Other cities,including Taipei, Shanghai and Wuhan, also support (支持) the day.
In Beijing,more and more people are joiningin the activity. It asks drivers to leave their cars at home for one day each month and walk or ride a bike to work. It also calls on Beijingers not to use cars on June 5 ( Word Environment Day). The slogan (口号) for the day is, "If we drive for one less day,we can have one more nice day. "
So far, more than 200000 drivers have shown their support. "We can’ t control the weather, but we can choose not to drive, "said Wu Zonghua, a car club chairman. Beijing is trying to have 238 blue sky days this year. In the first quarter of this year, Beijing only had 52 blue sky days. This was 11 days less than the number for the same period last year. Much of the dust(灰尘) comes from the desert(沙漠). But cars cause most of the air pollution(污染). We must do more for No Car Day.
According to the passage there were______blue sky days in the first quarter of last year in Beijing.

A:52 B:63 C:41 D:238

227 238 251 259（ ）

A:263 B:273 C:275 D:299