习惯用高声调语言者常导致（）
A.说话易疲劳
B.音质不佳，鼻音重
C.说话后常觉喉部不适、微痛
D.易发生声带小结
E.以上都是
参考答案：E
用所给单词的适当形式填空。
1. Let me tell you _________ (a) old story about Jesus.
2. At Christmas, many people _________ (bring) gifts to Danny.
3. Yesterday my father _________ (give) me a book.
4. They are _________ (follow) the star.
5. Look at the sun, it is _________ (shine) in the sky.
下列行业属于第一产业的是（）
A.建筑业
B.服装业
C.畜牧业
D.制造业
