如果样本的可靠程度为95%,则样本的风险度为()。
A.95%
B.100%
C.5%
D.90%
参考答案:C
Sarah is from France. She lives in Paris. She can speak French and English, but she can’t speak Chinese. She has a pen pal in the United States. Her name is Jane and she lives in New York. Sarah’s favorite sport is basketball and she can play the guitar, too. Jane’s favorite sport is tennis. She can’t play the guitar, but she can play the piano and sing.
小题1:Sarah comes from _______.
A.France
B.Australia
C.the United States
D.the UK小题2:Jane is _______.
A.a Chinese
B.a Korean
C.an American
D.a Japanese小题3:What language does Sarah speak?
A.French B.Chinese C.English D.A and C.
小题4:What is Sarah’s favorite sport?
A.Tennis
B.Soccer
C.Volleyballl
D.Basketball小题5:Which sentence is NOT right?
A. Sarah has a pen pal in the USA.
B. Sarah can play the piano and Jane can play the guitar.
C. Sarah and Jane like different sports
D. Jane lives in New York.
Experts are trying to work out a plan to deal with the problems caused by global warming ______ it is too late.
A.when
B.if
C.before
D.until