Ⅰ. 单句语法填空
1. On dark nights children should wear reflective (reflection)clothing.
2. All our results are published in scientific journals(journal).
3. We found further scientific evidence(evident) for this theory.
4. They also asked the people in the study where they were exposed(expose) to tobacco smoke.
5. I could no longer ignore the fact that he was deeply unhappy.
