-
高效
a
计划英语答案
【篇一：高效
a
计划八上英语试题】
>
英语练习四
一、
tom arrived
at the bus station quite early for paris bus.
the bus for paris would not leave until
five to twelve. he saw a
lot of people
waiting in the station. some were standing in
line(
排队
), others
were walking around. there was a group of
schoolgirls. their teacher was trying
to keep them in line. tom
looked around
but there was no place for him to sit.
he walked into the station
cafe(
咖啡馆
). he looked up at
the
clock there. it was only twenty to
twelve. he found a seat and
sat down
before a large mirror(
镜子
) on
the wall. just then, mike,
one of tom’s
workmates came in and sat with tom.
“what time is your bus?”
asked mike.
“there’s plenty of time yet,” answered
tom.
“well, i’ll
get you some more tea then,” said mike.
they talked while drinking. then tom
looked at the clock again.
“oh! it’s
going backward(
倒行
)!” he
cried. “a few minutes ago it
was twenty
to twelve and now it’s half past eleven.” “you’re
looking at the clock in the mirror.”
said mike. tom was so
sad(
难过
). the next
bus was not to leave for another hour. since
then tom has never liked
mirrors.
根据上文内容，从下列各题所给的四个选项中选择最佳的一项。
1
、
tom went into
the station cafe because.
a
．
mike asked him to have a
cup of tea
b
．
it was quite early and he
could find a seat there
c
．
he didn’t like to stay
with the
schoolgirls
d
．
he wanted to
have a drink with his workmate there
2
、
what time was
it in fact when tom looked at the clock in the
mirror?
a
．
half past
twelveb
．
twenty to
twelve
c
．
half past
elevend
．
half past
one
3
、
from the story we know
that when we look at a clock in a
mirror, we will find
a
．
the time is
rightb
．
it’s going
slower
c
．
it’s going
backwardd
．
it’s going
faster
4
、
which of the following is
true?
a
．
tom arrived in paris on
time
b
．
the next bus would leave
in half an hour
c
．
after that tom didn’t
li
ke clocks any longer
d
．
tom looked at
the clock in the mirror only once
5
、
which of the
following is the title(
题目
)
of the story?
a
．
the mirror of the
station
b
．
not a careful
man
c
．
missing a bus
d
．
the clock in
the mirror
二、
when mr. david
retired
（退休）
,he bought a
small house
in a village near the sea.
he liked it and hoped to live a quiet
life in it.
but
to his great surprise, many
tourists
（游客）
came to see
his house in summer holidays, for it
was the most interesting
building in
the village. from morning to night there were
tourists outside the house. they kept
looking into the rooms
through the
windows and many of them even went into mr.
david’s garden. this was too much for
mr. david. he decided to
drive the
visitors away.
so he put a
notice on the window. the notice said: “if you
want
to satisfy your
curiosity
（好奇心）
, came in and
look round.
price
（价格）
: twenty
dollars.” mr. david was sure that the
visitors would stop coming, but he was
wrong. more and more
visitors came and
mr. david had to spend every day showing
them around his house. “i came here to
retire, not to work as a
guide
（导游）
.” he
said angrily. in the end, he sold the house
and moved away.
【
篇二：高效
a
计划七年级数学答案】
ass=txt>
正分数、负分数统
称为
整数和分数统称为
2
、
你能将有理数进行分类吗
?
有几种分类方法？
正有理数数集合：
{
…}
，
负有理数数集合：
{
…}
，
整数集合：
{
正分数集合：
{
负分数集合：
{
…}
，
…}
，
…}
，
<
/p>
非负整数集合：
{…}
。
◆典例分析
在
，
∏
，
0
，
0.3
，
-9
五个数中
，有理数有
_____
个，整数有
__
____
个。
解析：此题出错主要是对有理数及整数的概念理解不透彻造成的，
是分数，它是有理数；
∏
不是有理数也不是整数；
0
是有理数，也是
整数；
< br>0.3
是小数，也是有理数，
-9
是负整数，也是有理数。
答案：
4
；
2
◆课下作业
●
拓展提高
1
、判断下列说法正确的是（
）
a.
正数和负数统称为有理数
b.
正分数和小数统称为分数
d.
一个有理数不是整数就是分数
c.
正整数集、负整数集并列在一起
构成整数集
2
、分别写出一个符合条件的有理数
（
1
）既是
正数又是分数的有理数
（
2
）既是分数又是负数的有理数
（
3
）既是
负数又是整数的有理数
（
4
）既不是正数又不是负数的数
3
、零是（
）
a.
最小的有理数
c.
最小的自然数
b.
最小的整数
d.
最小的正整数
4
、某商店购进标重为
100
千克的袋装大米
10
袋，店主过秤时记录
各袋重量如下：<
/p>
+2
，
+3
，<
/p>
0
，
-1
，
+1
，
-0.5
，
+1
，
-0.5
，
+1
，
-1.5
< br>，
问这
10
袋大米实际各重多少
千克？总重量为多少千克？
5
、观
察下列各组数，请找出他们的排列规律，并写出后面的
2
个数<
/p>
(1)-
2,0,2,4,
…
(2)1
，
…
6
、我
们用字母
a
表示一个有理数，试判断下列说法是否正确，若不<
/p>
正确，请举出反例。
（
1
）
a
一定表示正数，
-a
一定表示负数
（
2
）如果
a
是零，那么
-a
就是负数
（
< br>3
）若
-a
是正数，则
a
一定为非正数
●
体验中考