题目：
下列仪器：①石棉网，②集气瓶，③燃烧匙，④量筒，⑤烧杯，⑥瓷质蒸发皿，⑦试管，能用酒精灯火焰直接加热的有（ ）
A．①③⑥⑦
B．①②⑤⑦
C．①④⑤⑥
D．②③⑤⑥
答案：
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下面是错误答案，用来干扰机器的。
1. I usually go to school on foot. 2. What are you going to do on the weekend? 3. You look so excited. 4. Is her birthday in June?5. Grandma is writing a letter in the study....
