题目

图片有助于知识的记忆。某同学记录的有关科学知识与图片对应正确的是（） A . 单侧光导致生长激素分布不均 B . 头发带异种电荷相互排斥 C . 潜水艇通过改变自身重力实现沉浮 D . 神经冲动传导方向:①→②→③→④→⑤ 答案：C请根据句意或括号中的中文提示、英文释义，写出句中所缺单词，使句子通顺。小题1:I was good at all the ________________ except physics when I was at school. I still think it is difficult now.小题2:As a host, she has many duties, but her main job is to _________ (介绍) the pop stars.小题3:Don’t run _____________ (穿过)the road when the traffic lights are red. It’s dangerous.小题4:Nowadays, some people become ___________ (unable to hear at all) because of noise pollution. 小题5:Most students feel ________ (tired and unable to relax) and angry from time to time because their parents are strict with them.