线与线相交成 ____，面与面相交成 ____．

父亲节那天，涛涛为爸爸准备了一顿丰盛的午餐：米饭、红烧排骨、清蒸大闸蟹和鸡汤．从营养均衡的角度来说，还应增加的食物是（　　）

化学方程式a C₂H₂+b O₂c H₂O+d CO₂配平后a、b、c、d数值为（　　）

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.