题目

根据下图”(省略夹持仪器)回答问题:  (1)仪器e的名称是_______。 (2)用高锰酸钾分解制取氧气的化学方程式为_________，制备并导出氧气的装置应选取的仪器是c、h、____ (填序号)，收集氧气(用于做铁丝燃烧实验)应选取的仪器是_____(填序号)。 (3)用锌粒和稀盐酸制备H2(可随时使反应发生或终止)应选取的仪器是____(填序号)。 (4)氢化钙(CaH2) 常温下能与水反应生成H2，是野外工作人员便携燃料的来源。课外小组同学利用(3)中产生的H2与金属钙反应制取CaH2 (见图)单词拼写1.They talked about the contradictory theories of the________(起源) of life.2.The result will ________(确定地) turn out to be just the opposite of their wish.3.The journey to India in 1986 left an incredible ________(印象)on me.4.Marriages in proximity of blood are ________(禁止)by the law.5.In Northern California, a wildfire has _________（传播，蔓延） a haze of smokeover 200 miles.6.He _________ (猛烈地，激烈地) criticized self-styled educational experts forignoring Shakespeare.7.You can’t imagine the difficulty I had________(解决) the problem.8.I don't encourage people to take photographs like this without ________(允许), but by law we can publish.9.I have no ________(替换，可供选择的) but to report him to the police.10.These charities depend on the compassionate feelings and _________(慷慨，大方)of the general public.11.When things go wrong, all of us ________(自然地)feel disappointed and frustrated.12.Science and technology are No.1 _________（生产力的） forces.13.Companies must earn a ________(名声) for honesty.14.He coughed up the candy that was_________（卡住，困住）in his throat.15.Take-off and landing procedures have been tightened after two jets ________(勉强地，险些) escaped disaster.16.The wounded soldier opened his eyes once, but lost _________（意识) again immediately .17.When I saw the big snake, I ________(恐慌，惊慌) and did not know what to do.18.The police are very reluctant to get________(卷入，参与) in this sort of thing.19.There is no obvious ________(突破) with cancer at present.20.Our nation is wealthier and more ________(强大的，有力量的) than ever before.