题目内容

Fill in the gaps using the correct adjectives in brackets.Example:Sanjay’s brother is completely terrified (terrifying, terrified) of snakes.1. Everyone found the presentation extremely (boring, bored).2. The instructions are so (confusing, confused). I don’t know what to do.3. Selma and Bob are (interesting, interested) in wildlife.4. We were all (amazing, amazed) when Sharon won the race.

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Match the pictures to the correct sentences.

铜、银、金均可以单质状态存在于自然界。

A. 对
B. 错

铜族元素的化学性质均不活泼,并按Cu>Ag>Au的顺序递减。

A. 对
B. 错

在水溶液中的Cu(Ⅰ)比固体中的Cu(Ⅰ)稳定。

A. 对
B. 错

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