在抛掷硬币的试验中，连续多次抛掷一枚硬币，每一次都记录出现的“正面”或“反面”．下面的说法正确的是（　　）

某电路需要20A的保险丝，但手边只有用同种材料制成的“15A”和“5A”两种型号的保险丝，它们的规格如表所示，能否将这两种保险丝取等长的两段并联后用于该电路中

____ (填写“行”或“不行”)。

​

词汇检测

根据下列句子及所给汉语注释或通过上下文，在答题卡上标有题号的横线上，写出空缺处各单词的正确形式。每空只写一词。

Helen   ____   (点头) with a smile when she met me.

Becky ____  (明智地) decided to tell us the truth.

Justin lay back and enjoyed the   ____    (安宁) of the summer evening.

The bank is   ____   (在…对面) the supermarket, on the other side of the road.

My cousin used to be very interested in ____  (收集) postcards.

Edison is one of the greatest____   (发明家) in the world.

Mr. Green often  ____    (惩罚) his children by not letting them play games.

— Thanks for lending me the book Black Beauty.

— Don't  ____  it.

— What's the   ____    of the elephant?

— About two tons.

— Have you drunk all the milk?

— Yes. Look, the bottle is  ____    now.