加热50mL液体时，所需的仪器是（） ①试管；②烧杯；③酒精灯_爱下问搜题

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问题选择题

加热50mL液体时，所需的仪器是（　　）

①试管；②烧杯；③酒精灯；④试管夹；⑤石棉网；⑥铁架台；⑦三脚架．

A．①③⑤

B．②③⑤⑥

C．②③④⑥

D．①③⑤⑥

答案

答案：B

不定项选择题

初中生小寒学习成绩一直不理想，但是他发现自己跑得快，爆发力强。后来在老师的指导下，他坚持练习短跑。两年后，他考入了省体校并且在全运会上取得了优异的成绩。他的成长历程告诉我们[ ]

A．正确认识自己，才能不断进步

B．正确认识自己，就是要不断发现自己的优点，弥补自己的不足

C．任何成绩的取得，都要靠自己的努力

D．成绩不理想的同学都是因为没有正确认识自己

完形填空

There are 45 students in our class. Here are the results of a survey(调查). Thirty-six students they like to exercise. Most boys basketball twice a week, but girls think basketball is for them. They like to play volleyball twice a week. My friend, Tony, is at running. He runs fastest in our class. He runs for 30 minutes in the playground every evening he goes to bed. Gray is good at . He goes to the Swimming Club three times a month in winter, four times a week in summer, so he’s quite . Some of my classmates have good habits. They eat meat and vegetables. 70% of them drink milk every day. Fifteen students say they drink milk three or four a week. But some students like to eat junk food, especially(特别)Sally. What’s , she doesn’t like to , so she is very . She always says, “I’m going to weight tomorrow.”