题目

(11)短周期主族元素W、X、Y、Z、M、R在周期表中的相对位置如图所示，X的最低负价的绝对值与M的最高正价数值相等。 回答下列问题: (1)X位于周期表中第___周期_____族；M的原子结构示意图为______。 (2)六种元素中原子半径最大的是_______(填元素符号)。 (3)W、X、Y、R四种元素的最简单氢化物中最稳定的是_____(填分子式)。 (4)X2Y2分子中各原子的最外层均达到8电子结构，则X2Y2的电子式为_______。 (5)M的最高价氧化物对应的水化物与R的最高价氧化物对应的水化物Everyone knows what a needle is. Of course there are needles and needles: Needles for sewing machines, needles for injection(注射), you name it. But few people think of the wonder : a needle works in the hands of those who practice acupuncture(针刺疗法).During the past ten years or so, I have been suffering from terrible headache. It seems to be getting from bad to worse these days . Last night I got a sudden pain in my head. It was so terrible that I could hardly bear(忍受)it. Although I swallowed all kinds of pain-killers(止痛药), I didn’t feel any better, It seemed that there was nothing I could do but phone for a doctor.One of our neighbours happened to be with us. He was not a doctor, but he timidly(胆怯地) offered his help, saying “Do you mind if I tried acupuncture on you? These needles may possibly do you some good.” I agreed. In a moment, he had taken out a few needles from his purse. Without a moment’s delay, he fixed a few needles into the skin on my head here and there, Before long, I felt thoroughly relieved(缓解疼痛).Just then, the doctor sped through my house and said, “Where is our patient?”“Sorry, Doctor, You are too late, It’s killed!” I answered in delight.It’s miracle , isn’t it?小题1:The underlined phrase from bad to worse in the second paragraph refers to the man’s   . A．characterB．lifeC．headacheD．health小题2:Which of the following statements is NOT true according to the passage?A．the neighbour fixed needles on his own headB．The neighbour is a kind-hearted person.C．The man’s pain was killed before the doctor arrivedD．Soon after the acupuncture, the man was completely recovered.小题3:The sentences” You are too late. It’s killed .” mean that    .A．the pain was killed because the doctor came lateB．the man was killed because the doctor came too lateC．before the doctor came the man’s headache was already curedD．it was too late and the man had gone away小题4:The passage tells us that     .A．everyone knows that acupuncture is a miracleB．the neighbour wanted to use acupuncture on every patientC．the effect of acupuncture on the man was unbelievable D．the patient did not believe in acupuncture