1 . In striking contrast to his elder brother, Henry always seems ________（energy）. (所给词的适当形式填空)

2 . “What were the patient’s symptoms?” “She was d____________ and short of breath.” (根据首字母单词拼写)

3 . It seemed to happen all of a sudden — I felt d____________ and I just collapsed. (根据首字母单词拼写)

4 . Someone who is suffering from sunstroke feels d____________ and has a high temperature, but does not sweat. (根据首字母单词拼写)

5 . I felt d____________ with excitement as I went up to collect the award. (根据首字母单词拼写)

6 . Going without sleep for a long time makes me feel ____________(眩晕) and light-headed. (根据汉语提示单词拼写)

7 . I can’t untie the knot —— it’s too t____________. (根据首字母单词拼写)

8 . The security guards carried out r____________ checks on people entering the building. (根据首字母单词拼写)

9 . The survey was carried out among a r____________ sample of voters. (根据首字母单词拼写)

10 . And what might be the underlying significance of these supposedly ____________(随机) acts of violence? (根据汉语提示单词拼写)