先通读短文，掌握其大意，然后从A、B、C、D四个选项中选出一个可以填入相应空白处的最佳答案，并将其标号填入题前括号内。
In our daily life, escalators are more popular and
useful. It’s easy to think. In a tall building. You work on the thirtieth floor. Maybe you can walk up all the stairs__36____ .But
can you climb thirty___37___ to
your office every day? Of course
not..
In the past, a worker is needed to control an old
lift. He or she operates it ___38___ . Now in a modern lift, there is no
_ 39___ to operate
it.
Do you know __40____ to use a lift? OK, let me tell you . _ 41_____ , you want to go to
the twelfth floor from the ground floor. First, you must press the button，then the
door opens. After that, you can ___42_____ the lift. Third, you
press the button again and the door closes. Fourth, you press the number l2, then the
lift takes you up to the ____43___
floor.
When the door opens again, you can get out of the lift. If you want to go down to the first floor, you must press the
button , then do the ___44____ . It will take you down there. It is very easy and ___45_____ .Now can you
use it?
36.(
) A. one
time B. much time C. all the time
D. no time
37.(
) A. buildings B. meters C .steps :
D. floors
38.(
) A. in and out B. up and down C. on and off D. here and there
39.(
) A. worker B. student C. teacher
D. farmer
40.(
) A. how B. what C. where
D. when
41.(
) A. In the end B. By the way C.
For example D. As usual
42.(
) A. get
into B. get up C. get out of D. get off
43.(
) A. twelve B. twenty C. twelfth
D. twentieth
44.(
) A. first B. different C.
next D. same
45.(
) A. slow B. hard C. fast D. free