0  408459  408467  408473  408477  408483  408485  408489  408495  408497  408503  408509  408513  408515  408519  408525  408527  408533  408537  408539  408543  408545  408549  408551  408553  408554  408555  408557  408558  408559  408561  408563  408567  408569  408573  408575  408579  408585  408587  408593  408597  408599  408603  408609  408615  408617  408623  408627  408629  408635  408639  408645  408653  447090 

4. 已知且α为第二象限角,则m的允许值为

A.    B.    C.    D.

试题详情

3.已知函数(为常数,)在处取得最小值,则函数

A.偶函数且它的图象关于点对称  B.偶函数且它的图象关于点对称

C.奇函数且它的图象关于点对称  D.奇函数且它的图象关于点对称

试题详情

2. 如果的三个内角的余弦值分别等于的三个内角的正弦值,则

A.都是锐角三角形    B.都是钝角三角形

C.是钝角三角形,是锐角三角形

D.是锐角三角形,是钝角三角形

试题详情

1. 设,对于函数,下列结论正确的是

A.有最大值而无最小值    B.有最小值而无最大值

C.有最大值且有最小值    D.既无最大值又无最小值

试题详情

20.What happened in Peter’s hometown?

A.A flood.           B.An earthquake.         C.A traffic accident.

试题详情

19.What can we know about Peter’s hometown?

A.It is a flat city far from mountains.

B.It is a mountain village.

C.It is a mountain city.

试题详情

18.How did Peter feel when he woke up?

A.Angry.               B.Surprised.         C.Afraid.

试题详情

17.How long will the man’s friend stay with him?

A.One or two years.           B.Several months.     C.A few days.

请听第10段材料,回答第18至20题。

试题详情

16.Where is the man’s friend from?

A.Germany.                 B.Australia.          C.America.

试题详情

15.How did the man feel when he received the letter?

A.A little disappointed.     B.Very angry.         C.A little surprised.

试题详情


同步练习册答案