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【简答题】
我们日常生活中最常见的一种金属，长期放置在空气中会生锈（铁锈的主要成分是氧化铁），放在纯氧中会剧烈燃烧，火星四射生成一种黑色固体四氧化三铁；放入稀盐酸中，会冒出大量气泡，同时生成氯化亚铁．请从以上短文中选择合适的物质，将其化学式填写在下列空格中． （1）一种非金属单质______； （2）一种金属氧化物______； （3）一种酸______； （4）一种可溶性盐______．
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举一反三
【简答题】I gave up the job. I feel sorry about it. (regret / give up)
【单选题】听力原文：M: Hi, Laura. How are you today? W: Terrible. I gave up my job. M: You mean you have left Mr. Brown? W: I can't work for him any more. What happened to the woman?
A.
She found a new job.
B.
She gave up her job.
C.
She felt terrible yesterday.
【单选题】作为各国际机构做贸易统计报告和对世界贸易进行系统分析的共同基础的产品分类标准是( )
A.
SITC分类标准
B.
HS分类标准
C.
BEC分类标准
D.
CPC分类标准
【单选题】I had no choice but ______ the job.
A.
to give up
B.
giving up
C.
gave up
D.
gives up
【简答题】根据句意及括号内所给单词的提示填空。 11.Mr. Miller gave up his job ________(look) after his sick daughter. 12.Kate would like ________(be) a teacher when she grows up. 13.Mrs. Hand didn’t let me ________(give) out the ...
【单选题】—You know I gave up the job as a waiter and went to the little company. —That's ______ you've made a mistake.That company isn't well managed.
A.
what
B.
why
C.
where
D.
how
【简答题】Complete the sentences with compound words. (请用复合词填空,完成句子。) (1) These ______________________ (新设计的) machines will appear at the trade fair next month. (2) I have been enquiries about the price ...
【简答题】I deem it is appropriate that he _____________________ (交心谈一谈) with his manager before he gave up the job.
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