请根据下面的短文回答第66－70题：

The Maryland Science Center is more than fun. You can enjoy the three floors of exciting things， watch the larger-than-life play on the 4th floor， and travel to other worlds， to far away stars， on the 5th floor.

Don’ t just look. You are expected to feel， to turn， to push. Build your own house and learn　why it stands or falls. Use computers to work out plans just as famous scientists have done. There is always something new to learn at the Maryland Science Center.

Children and group visitors enjoy half price.

The excitement of the Maryland Science Center does not end when you leave. Visit the Science　Store for a gift you‘ d like to keep. Electronic jewelry（ 电子珠宝）， games， books， and more --take part of the Science Center .home with you.

Information

Where to call：

24 hour general（常规的） information（410）685-5225

24 hour STARLINE night sky information （410）539-STAR

Group visitor information （410） 685-2370

Hours：

The Maryland Science Center is open 7 days a week （except Thanksgiving Day and Christmas

Day ）

Monday－Friday 10 a. m. -6 p. m.

Saturday and Sunday 10 a. m. -8 p. m.

66. What can visitors do at the Maryland Science Center？

［ A ］ Learn science by trying it out.

［ B ］ Watch and take part in a play.

［ C ］ Make gifts for their friends.

67. The Maryland Science Center stays open 。

［ A ］every day from 10 a.m. to 8 p.m.

［ B ］ almost all the weekdays and weekends

［ C ］ on Thanksgiving Day and Christmas Day

68. By calling （410）685-2370 we can get information about 。

［ A ］ the night sky show

［ B ］ books and games

［ C ］ group price tickets

69. “Take part of the Science Center home with you” means that 。

［ A ］ visitors can buy something there and take them home

［ B ］ the Science Center may be sold to visitors

［ C ］ the visitors can make the Science Center their home

70. Which is true about the Maryland Science Center？

［ A ］ Visitors can play and learn， at the same time.

［ B ］ It helps visitors travel to other countries.

［ C ］ It can be visited 24 hours a day.