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2. Knock a _____ into the earth to keep the tree _____.
3. Put the _____ in the _____. Make _____ that it is _____.
4. _____ the _____ back into the _____.
_____ it _____ hard with your _____ several times.
5. Tie the _____ to the top of the stick to _____ it straight.
6. _____ the tree well.
1. Get the onion and garlic ready. __________
2. Cut the onion and garlic into small pieces with a knife. __________
3. Add a little oil to the pan. Heat (加热) the oil. __________
4. Cook all the vegetables for about 3 minutes. __________
5. Beat the eggs with a fork. Add some salt and pepper __________
书面表达
写一写你最喜欢的食物的制作步骤,不少于60字。可用first,next,then,finally。
_____________________________________________________________________
查看习题详情和答案>>2. Do you want to be a_______(英雄)in the future?
3. Passengers, attention please!_______(航班)No. CA149 will take off,please go to Gate 8.
4. All pilots are_______(负责的)for their passengers' safety.
为探究“废电池对生物的影响”,某研究小组设计了如下实验步骤:
①将一节用过的五号电池破碎,浸泡在1000mL清水中3天,过滤得到滤液。②四只鱼缸分别贴上A、B、C、D标签,并在鱼缸中都加入5000mL清洁无污染的河水。③在A、B、C、D四只鱼缸中,依次加入50mL、100mL、200mL、400mL的电池浸出液。④再向各鱼缸中分别加入三条大小和生活状态差不多的小金鱼,定时喂等量同种饲料,观察并记录情况。
结果如下表:
A B C D
所加浸出液的体积(mL) 50 100 200 400
小鱼存活的时间(天) 15 12 7 1
根据以上设计,请回答下列问题:
(1)该小组同学提出的问题是:__________________________________________________。
(2)根据表中的数据可知,水中电池浸出液的浓度越大,金鱼存活的时间就越_______。
(3)由此,该小组同学得出结论:废电池对生物有影响。你认为他们这样得出结论严谨?
答:__________。为什么?_________________________________________。
(4)请你对使用过的电池如何处理作出合理化的建议:_______________________。
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