Ⅰ。 Phonetics (10 points)
Directions：
In each of following groups of words， there are four underlined letter combinations marked A， B， C and D. Compare underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet.
1.A. enough B. about C. touch D. young
正确答案是：B A
2.A. thirsty B. throat C. youth D. those
正确答案是：D
3.A. shut B. cut C. funny D. use
正确答案是：D
4.A. thanks B. pills C. news D. films
正确答案是：A
5.A. dear B. heart C. ear D. tear
正确答案是：B
6.A. births B. depths C. months D. mouths
正确答案是：D
7.A. election B. pronunciation C. question D. operation
正确答案是：C
8.A. hot B. home C. top D. off
正确答案是：B
9.A. may B. day C. stay D. Sunday
正确答案是：D
10.A. weigh B. eight C. seize D. daily
正确答案是：C
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