问题 选择题

如图所示v-t图象中的曲线为抛物线,此图可以反映下列哪种运动的运动规律?(  )

A.自由落体运动

B.加速直线运动

C.减速直线运动

D.平抛运动

答案

A、自由落体运动的速度为v=gt,v与t成正比,v-t图象是过原点的直线.故A错误.

B、加速直线运动,速度不断增大,与图象不符.故B错误.

C、减速直线运动,速度不断减小,若加速度增大,v-t图象的斜率增大,所以是可能的.故C正确.

D、平抛运动的速度为v=

v20
+(gt)2
,v0、g一定,速度随时间是变大的.故D错误.

故选C

阅读理解

RINGSTEAD BAY, DORSET

A picturesque 210 ft crescent (弦月状) of pebbles with clean water--- that’s a perfect escape from some of the busier beaches around Weymouth. You reach it by passing through the village of Upton, then along a narrow country road. Next to the car park is a well-stocked shop. The cliffs behind RINGSTEAD Bay are an excellent place for fossil hunting.

Accommodation: Glenburn Hotel (01305 832318, www. Glenburnhotel.com) with doubles from £79 including breakfast.

BRANSCOMBE, DEVON

Lying on the East Devon Heritage Coast, Branscombe has good facilities with toilets and a car park close to the beach, as well as a small picnic area. A well-stocked shop sells the most attractive dairy ice cream. Next to the shop is the Sea Shanty restaurant—open every day until 5 pm during the summer.

Accommodation: The Mason’s Arms, Branscombe Village (01297 680300, www. Masonsarms. Co.uk) with doubles from £65 pp with breakfast.

小题1:Which beach is the most wonderful place for summer bathing?

A.COMPTON BAY.

B.BRANSCOMEBE.

C.KINGSGATE BAY.

D.RINGSTEAD BAY.小题2:If you want to know more information about Fayreness Hotel, you’d better refer to the following website_____________.

A.www. Masonsarms. co. uk

B.www. Fayreness. Com

C.www. Glenburnhotel.com

D.www. Sandpipershotel.com小题3:What is the purpose of the passage?

A.To attract more tourists.

B.To describe some beautiful beaches.

C.To tell us the most beautiful places in UK are beaches.

D.To tell us where to spend summer.

单项选择题