题目内容

Everything in the universe is made of atoms.

A. 对
B. 错

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We can see atoms with the naked eye.

A. 对
B. 错

Nucleus consist of neutrons and charges.

A. 对
B. 错

Insulators allow free electrons to move freely thoughout the solid.

A. 对
B. 错

If the atom loses electrons, it becomes positively charged.

A. 对
B. 错