Not until the early years of the 19th century ____ what heat is.

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【判断题】

Anyone is likely to commit mistakes, no matter however careful he is.

① 正确

② 错误

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【判断题】

A: I think the Internet is very helpful. B: Yes, it is.

① 正确

② 错误

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【单选题】

22. ______ Renaissance was the period of the revival of classical art and literature in the 14th to 16th centuries.

① The

② a

③ /

④ . one

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【单选题】

His early retirement left him in a ( ).

① empty

② vacancy

③ void

④ avoid

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【单选题】

I____________ early this morning.

① sped up

② woke up

③ picked up

④ gave up

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【单选题】

People walk around （） nineteenth-century clothes.

① wearing

② wore

③ wear

④ worn

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【单选题】

I’d like a （）to Beijing on the 20th

① sleeping

② sleep

③ sleeps

④ sleeper

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【单选题】

在19世纪初叶

① in the early nineteenth century

② at the early nineteenth century

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【单选题】

The companies are working together to create [] they hope will be the best means of transport in the 21st century.

① which

② that

③ what

④ who

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【单选题】

We started out early in order that we ____ there in time.

① would get

② ought get

③ should get

④ had to

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