根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑。选项中有两项为多余选项。
Pronunciation Tips
These English pronunciation tips will help you get the most out of your Pronunciation Power program.
★ ____
For example, “threw” and “through”, although spelled differently, are pronounced the same. Also, identical（相同的）letters or letter clusters（字母组合） in words do not always produce the same sound. For example, the “ough” in “though” and “through” represents a different sound in each word.____
★ Imagine a sound in your mindbefore you say it.
Try to visualize（想象)）thepositioning of your mouth and face.____
★ Listen to and try to imitate thePronunciation Power instructor.
In addition to listening for specific sounds, pay attention to pauses, the intonation（语调） of the instructor's voice and patterns of emphasis.____．
★ The English language has manydifferent dialects, and words can be pronounced differently.
It is important, however, that you pronounce words clearly to ensure effective communication.
★ Finally, the Pronunciation Powerprogram is a tool to help you.
But you must practice what you are learning! Remember that you are teaching your mouth a new way to move. You are building muscles that you do not use in your own language.____Use the program to exercise yourmouth a little bit each day.
a. Read these words over and over againand try to learn them by heart.
b. This can be just as important as the pronunciation of sounds.
c. Learn to practice what you hear, notwhat you see.
d. So you should force yourself to dowhat you really don't like to do.
e. Do not confuse pronunciation of words with their spelling!
f. It is like going to the gym andexercising your body.
g. Think about how you are going to make the sound.
