Step 1 Open the CD player by lifting the lid.

Step 2 Take the CD out of its case.

Step 3 Hold the disc by the rim. Be careful not to touch the surface of the disc.

Step 4 Put the CD carefully into the space of the CD player. Make sure the printed side is facing upwards. Close the lid.

Step 5 If you use headphones, plug(插入) them into the headphone jack.

Step 6 Turn on the power.

Step 7 Set the volume(音量) control to a low or middle level.

Step 8 Press the “play” button.

Step 9 Adjust(调整) the volume control to the level you like.

46. What do these instructions explain?

  A. How to choose a CD player.  B. How to make a CD.

  C. How to take care of CDs.   D. How to use a CD player.

47. These instructions are for a reader     .

  A. familiar with CD players   B. using a CD player with a remote control（遥控）

  C. listening to pop music    D. using a CD player for the first time

48. Which step could you do before Step 1?

  A. Step 4.  B. Step 5.  C. Step 3.    D. Step 9.

49. What is the “rim” of a CD? It is      of a CD.

  A. the edge  B. the hole   C. the music  D. the writing

50. The passage is probably taken from a     .

  A. handbook   B. newspaper   C. magazine  D. diary

Lily, ________ step on my foot!

[　　]

A．doesn't

B．don't

C．isn't

The step-mother made the little girl ________ all her clothes.

A. to wash

B. washing

C. wash

D. washed

 -Don't step on the grass next time, Mike.

         -_______.

A. Is that so?           B. Don't worry.         C. I don't know.        D. Sorry, I won't

 

---Don’t step on the grass next time, Mike. 

  --- ___________

  A. Is that so?        B.   Don’t worry.     C. I don’t know. D. Sorry, I won’t.