一、选出下面单词中画线部分读音不同的一项。
()1. A. relative B. preparation C. temper D. heroes
()2. A. flood B. trouble C. truck D. volunteer
()3. A. interview B. refuse C. security D. huge
()4. A. power B. soundly C. snowfall D. flower
()5. A. thinking B. thankful C. English D. thin

1.D 2.D 3.C 4.C 5.D

1题中A、B、C画线部分读音均为/e/，D画线部分读音为/ɪə/，故选D；2题中A、B、C画线部分读音均为/ʌ/，D画线部分读音为/ə/，故选D；3题中A、B、D画线部分读音均为/juː/，C画线部分读音为/jʊ/，故选C；4题中A、B、D画线部分读音均为/aʊ/，C画线部分读音为/əʊ/，故选C；5题中A、B、C画线部分读音均为/ŋ/，D画线部分读音为/n/，故选D。

二、将下面方框中的单词按画线部分的读音分类。
neighbourhood rainstorm typhoon tsunami
thunder could sudden unfortunately
1. /uː/
2. /ʊ/
3. /ʌ/
4. /ɔː/

1. /uː/：typhoon, tsunami；2. /ʊ/：neighbourhood, could；3. /ʌ/：thunder, sudden；4. /ɔː/：rainstorm, unfortunately

先分析方框内各单词画线部分的读音：typhoon的oo读/uː/，tsunami的u读/uː/；neighbourhood的oo读/ʊ/，could的ou读/ʊ/；thunder的u读/ʌ/，sudden的u读/ʌ/；rainstorm的or读/ɔː/，unfortunately的or读/ɔː/，再按读音分类。

一、根据句意和首字母提示拼写单词。
1. After the storm, people helped each other and fought against the f together.
2. We have made full p for the meaningful volunteer activity.
3. After a long day of helpful work, we all slept s at night.
4. I lay on the sand, listening to the waves b against the shore.
5. Those who keep helping others are true h in our time.
6. It is n time for us to start our meaningful class.
7. We should keep reading to get more useful k.
8. Our classmates will give us a hand when we are in t.
9. A big t brought lots of books and love to the rural students.
10. We felt t sorry that we couldn't help more people this time.

1. flood 2. preparations 3. soundly 4. beating 5. heroes 6. now 7. knowledge 8. trouble 9. truck 10. truly

本题为八年级英语首字母拼写题，需结合句意及首字母提示，填写符合单元词汇要求的正确单词。