合成系统开车前要把电气、仪表、设备牌备用状态,冷却水不必投用。
参考答案:错
用所给单词的正确形式填空。
1. I would like some (sugar).
2. It's a (snow) day.
3. It's hot today. Let's go (swim).
4. What colour is (Mary) hat?
5. They (not go) to school tomorrow.
20世纪以后,义务教育普遍向高等教育延伸。