问题 选择题

在教学楼的楼梯口,有如图所示的0、1、2、3k级台阶,每级台阶的长为30cm,高为15cm(g=10m/s2).某同学从第0级台阶的边缘以v0=5m/s水平抛出一小球(不计一切阻力),则小球将落在第几级台阶上

A.7级

B.8级

C.9级

D.10级

答案

答案:C

题目分析:如图作一条连接各端点的直线,只要小球越过该直线,则小球落到台阶上;设小球落到斜线上的时间t,水平:,竖直:解得

相应的水平距离:,台阶数:知小球抛出后首先落到的台阶为第9级台阶.故C正确

阅读理解

Beldon and Canfield are two seashore towns, not far apart.Both towns have many hotels, and in summer the hotels are full of holiday-makers and other tourists.

Last August there was a fire at the Seabreeze Hotel in Beldon.The next day, this news appeared on page two of the town’s newspaper.The Beldon Post:

FIRE AT SEABREEZE

Late last night firemen hurried to the Seabreeze Hotel and quickly put out a small fire in a bedroom.The hotel manager said that a cigarette started the fire.We say again to all our visitors: “Please don’t smoke cigarettes in bed.” This was Beldon’s first hotel fire for five years.

The Canfield Times gave the news in these words on page one:

ANOTHER BELDON HOTEL CATCHES FIRE

Last night Beldon firemen arrived just too late to save clothing, bedclothes and some furniture at the Seabreeze Hotel.An angry holiday-maker said, “An electric lamp probably started the fire.The bedroom lamps are very old at some of these hotels.When I put my bedside light on, I heard a funny noise from the lamp.” We are glad to tell our readers that this sort of adventure does not happen in Canfield.

What are the facts, then? It is never easy to find out the exact truth about an accident.There was a fire at the Seabreeze Hotel last August: that is one fact.Do we know anything else? Yes, we know that firemen went to the hotel.

Now what do you think of the rest of the “news” ?

小题1:Which of the following best gives the main idea of this text?

A.Beldon and Canfield are both good places for tourists in summer.

B.A fire broke out at night in Seabreeze Hotel last summer.

C.It was not easy to find out exact truth from newspapers.

D.Two newspapers gave reports on the same matter.小题2:Which of the following are probably facts? 

a.The fire broke out in a bedroom at the hotel.

b.A cigarette started the fire.

c.An old lamp started the fire.

d.The fire broke out at night.

e.There has never been a fire in Canfield.

A.b and c

B.a and d

C.c and e

D.a and c小题3:The Canfield Times used the headline like this in order to make its readers think _______.

A.hotels in Beldon often catch fire

B.hotels in Beldon don’t often catch fire

C.this was the second fire at the Seabreeze Hotel

D.Beldon was a good place except that hotels there are not quite safe小题4:The Canfield newspaper gave a report just the opposite to the Beldon Post by saying that _______.

A.the bedroom lamps were very old at the Seabreeze Hotel

B.the bedroom lights made funny noise when the fire took place

C.the firemen failed to save clothing, bedclothes and other things

D.such accidents never happened in Canfield for the past 5 years

问答题 论述题