问题 问答题

关于自由落体运动,正确的说法是(  )

A.自由落体运动是一种匀变速运动

B.自由落体的快慢与物体质量的大小有关

C.在地球表面上各处,物体自由落体运动的加速度大小相等

D.在地球表面上经度较大处,物体自由落体运动的加速度较大

答案

A、自由落体运动是初速度为零的匀加速直线运动.故A正确.

    B、自由落体运动的快慢与质量无关,不管轻重如何,下落的快慢相同.故B错误.

    C、在地球上的各点,重力加速度不同,随着纬度的升高而增大.故C、D错误.

故选A.

阅读理解

There are lots of attractions in St.Petersburg.If you’re short of time to visit all of them,or if you just want to make sure to hit the highlights(最精彩的部分),the following are the top must- see sights in St.Petersburg.

1.The Hermitage Museum

The Hermitage Museum is one of the most important sights to see for any visitor to St.Petersburg.There you can see lots of different paintings painted by the old masters.Prepare to come face to face with many of the western classical artists.

2.Kizhi Island

Kizhi Island is an open-air museum of wooden buildings from the Karelia region of Russia. These impressive structures are made without any nails(钉子).Can you imagine how the wood fits together? Come and see for yourself!

3.Peterhof

Peterhof is as beautiful as it is fun.You’ll be charged for admission(门票),but if you go to Peterhof when the fountains(喷泉) are working—during the day in summer—the admison will be worth it.

4.Church of the Savior on Spilled Blood

Love it or hate it,Church of the Savior on Spilled Blood in St.Petersburg is a real must-see sight.This beautiful building will truly surprise you,and the paintings inside the church will make you say“Wow!”

5.The Bronze Horseman Statue

The so-called Bronze Horseman is a part of Russian culture and is a symbol of St. Petersburg.Made famous by Alexander Pushkin,this statue of Peter the Great sitting on his horse truly shows Peter the Great’s influence on the Russian idea of greatness.

1.If you are interested in paintings,you’d better go to _________.

A.The Hermitage Museum and Kizhi Island

B.The Bronze Horseman Statue and Kizhi Island

C.Kizhi Island and Church of the Savior on Spilled Blood

D.The Hermitage Museum and Church of the Savior on Spilled Blood

2.What can we learn about Kizhi Island?

A.Kizhi Island is an indoor museum.

B.Visitors can find nails in the structures there.

C.The buildings on Kizhi Island are made of wood.

D.The wooden buildings are connected with wires.

3.We can learn from the text that        .

A.visitors can visit Peterhof free of charge

B.The Hermitage Museum has lots of modern western arts

C.the fountains in Peterhof can be seen by visitors all year round

D.The Bronze Horseman Statue is a symbol of St.Petersburg

4.The author wrote the text to_________.

A.attract tourists to visit St.Petersburg

B.show the wonderful history of Russia

C.persuade artists to go to St.Petersburg

D.introduce the famous buildings of Russia

问答题 简答题