单选题In a physical education class, 20 students were tested on archery target shooting. These students were then given a two-day training course in archery technique. The students were tested again and showed a 30 percent increase in accuracy. This result p
题目
单选题
In a physical education class, 20 students were tested on archery target shooting. These students were then given a two-day training course in archery technique. The students were tested again and showed a 30 percent increase in accuracy. This result proves that the course was effective in increasing people’s target-shooting accuracy. Which of the following, if true, gives the strongest support to the argument above?
A
The students were all excellent athletes, and excellent athletes tend to be good at target shooting.
B
The first testing session functioned as a practice ,session for the second testing session.
C
The accuracy with which people can shoot arrows is strongly related to the sharpness of their vision.
D
A similar group of students who were also tested on archery target shooting but were not given the course did not show an increase in accuracy.
E
Excellence in archery target shooting is an accomplishment achieved by relatively few of the people who take up the sport.
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参考答案和解析
正确答案：
D
解析：
文段由“进行两天的培训课后准确率提高了30％”，得出结论：射击培训课是有效的，如果没有射击培训的学生准确率没有得到提到的话，就从侧面证明了这一结论，故D项是正确的。
文段由“进行两天的培训课后准确率提高了30％”，得出结论：射击培训课是有效的，如果没有射击培训的学生准确率没有得到提到的话，就从侧面证明了这一结论，故D项是正确的。