据某高速公路交通事故统计，蓝色车辆较其他颜色的车辆出事故更多_爱下问搜题

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问题单项选择题 A2型题

据某高速公路交通事故统计，蓝色车辆较其他颜色的车辆出事故更多，由此推论驾驶蓝色车比其他颜色的车发生事故的危险性更高。该推论是（）

A.正确的

B.不正确，因为没有采取对照组

C.不正确，因为该比较不是基于率的比较

D.不正确，因为未进行统计学检验

E.不正确，因为用流行率而未用发病率

答案

参考答案：C

解析：此统计在推论时忽略了蓝色车辆所占的比例。

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Today in History

June 11
Q: When was the movie "ET" released?
A: "ET", the story of a space alien who was friendly to a lovely earthling boy, was shown on this
day in 1982. "ET" is one of the highest grossing movies of all time.

June 12
Q: What is the most famous diary of the 20th century?
A: It is "The Diary of Anne Frank," written by a young Jewish girl. Anne Frank, who was born on
this day in 1929, wrote about the two years she spent in hiding with her family, trying to escape
Nazi persecution.

July 18
Q: What great amusement park opened on this day in 1955?
A: It was Disneyland, in Anaheim, California. Every year several million people visit the park. In
1971, another amusement park, Walt Disney World opened in Orlando, Florida.

July 20
Q: Who left this plaque which reads "Here men from the planet Earth first set foot upon the moon
July, 1969, AD. We came in peace for all mankind."?
A: It was Neil Armstrong, who was the first human being to set foot on the moon on this day.
From the time he was a child, Armstrong knew he wanted to be a pilot.

1. release 发行                                               2. space alien 外星人
3. grossing 赚钱的                                         4. Jewish 犹太人
5. Disneyland 迪斯尼乐园                               6. Nazi persecution 纳粹的迫害
7. plaque 薄金属板                                         8. pilot 飞行员

1. Ann Frank was famous for her diary about _______.

A. her staying with her family
B. her difficult childhood
C. her short life in prison
D. her two years to get away from Nazi

2. In the past 40 years, _______.

A. a space alien has visited the earth
B. "ET" has made a lot of money
C. man has taken a great step
D. Armstrong's dream has come true

3. Disneyland first appeared in America _______ years ago.

A. 55
B. 35
C. 51
D. 71

选择题

甲、乙两物体的加速度分别为a₁=1m/s²、a₂= -1m/s²。则

A．甲物体的速度增加了1m/s

B．乙物体的速度减少了1m/s

C．甲物体比乙物体的速度变化快

D．两物体的速度变化快慢相同