正确答案: A

公元前2070年

题目：我国的奴隶社会的历史开始于

解析：A

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举一反三的答案和解析：

[单选题]关于磁体和磁场，以下说法中错误的是

铁、铜、铝等金属材料都能够被磁化

[单选题]发现有人触电后，应采取的正确措施是

赶快切断电源或用干燥的木棒将电线挑开 D．赶快用剪刀剪断电源线

[单选题]6． —Do you like oranges?—__________．I like bananas．

No， I don't

解析：6．B【解析】根据答语可知应为否定回答。

[单选题]14．

watches

解析：14．B【解析】看电视应用watch，主语是he．watch 应加'es。 ’

[单选题]屈原被定为世界文化名人的最主要依据是他

创造出新体诗歌，著有《离骚》

[单选题]A small boy was walking (51) a street in London． His name was Tom．It was a cold winter day in 1900．(52) he could not have breakfast or lunch． He didn't have any money． His father died(死了)when he was very young． His mother was often ill，so she couldn’t (53) Tom and his brother，Mike． Both of them had to work to help their mother． He was small but his dream(梦想)was very (54) ． His wish was to be a famous actor． He worked very hard to sing and dance (55 ) ．One day，a man came to him and asked，" (56) in my film?""Certainly，"he answered．

along

解析：51．A【解斩】walk along a street“沿着街走”。

[单选题]3． He can play the violin ________he can-t play it very well．

but

[多选题]不同的市场调查具有不同的程序，但基本可以分为三个阶段，即（ ）。

调查准备阶段

调查实施阶段

调查分析阶段

解析：ACD

[单选题]27的立方根是（ ）

3