问题
判断题
实验室内的电线、开关、灯头、插头、插座等一切电器用具，要经常检查是否完好，有无漏电、潮湿、霉烂等情况。一旦有问题应立即报修。
答案
参考答案：对
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实验室内的电线、开关、灯头、插头、插座等一切电器用具，要经常检查是否完好，有无漏电、潮湿、霉烂等情况。一旦有问题应立即报修。
参考答案：对
| 选择合适的单词补全句子。 | |
The best time to go to Beijing is fall. It's 1._________ and cool. You can go to the Great Wall. When is the best time to go to Harbin? Of course2.__________. It's windy and cold. But you can 3._______ there. 4._________ is the best season to go to Sanya. It's sunny and hot. You can 5. _______ in the sea. What about Hangzhou? 6.________ is the best time to go there.The sky is 7.________. The leaves are 8._____. It's beautiful. You can 9._____________, too. |