以下表达“自然变化”的英语词汇是_______。
A: toxic chemicals
B: chemical industry
C: chemical changes
D: natural changes
A: toxic chemicals
B: chemical industry
C: chemical changes
D: natural changes
举一反三
- 以下表达“科学领域”的英语词汇是_______。 A: chemical principles B: scientific fields C: natural changes D: chemical pollution
- 以下表达“基本原理”的英语词汇是_______。 A: fundamental principles B: chemical pollution C: various mixtures D: simple chemicals
- The changes of chemical reactions include:
- The chemical is lethal to rats but safe to cattle. A: toxic B: harmful C: deadly D: contagious
- 2. Mr. Cousins attributed the bad chemical changes in his body to A: a severe illness. B: weak bones. C: too much sleep. D: unhappy thoughts.