Key: E

Analysis: The passage explicitly lists “The advantages of nuclear …” (cost, no smoke/CO\( 2 \), huge energy, small waste, reliable) and then contrasts with “On the other hand, nuclear power is very dangerous …” (radioactivity, safety costs, disaster risk). Therefore, it discusses both advantages and disadvantages.

A. Too broad: the text is not only general; it specifically balances pros and cons.

B. Incorrect focus: it mentions a first large-scale station, but that is not the main topic.

C. Too narrow: danger and radioactivity are discussed, but not as the only focus.

D. Incorrect: the text includes advantages as well, not only disadvantages.

E. Correct: it covers both sides clearly.

Key: E

Analysis: “Dangerous” means not safe, risky, likely to cause harm. The direct opposite is “safe.”

A. Incorrect: “vile” means disgusting/evil, not the opposite of dangerous.

B. Incorrect: “dull” means not interesting or not sharp.

C. Incorrect: “tiny” refers to size.

D. Not correct: “calm” means peaceful/quiet; something can be calm but still dangerous.

E. Correct: “safe” is the antonym.

Key: A

Analysis: Paragraph \( 4 \) says nuclear power “must be sealed up and buried for many years to allow the radioactivity to die away.” This means the radioactivity lasts a long time and creates danger.

A. Correct: directly supported by “for many years” until radioactivity dies away.

B. Incorrect: the text does not say uranium is renewable; and that would not be a reason for danger.

C. Incorrect: reliability is mentioned as an advantage, not a reason for danger.

D. Incorrect: being cheap is not stated as a danger reason; cost is discussed as “about the same as coal.”

E. Incorrect: “safe” contradicts “dangerous.”

Key: A

Analysis: The advantages list explicitly states: “It is reliable.” Other choices contradict the passage: it is “not expensive to make,” it “causes no pollution,” it “doesn't contribute to the greenhouse effect,” and it produces “huge amounts of energy.”

A. Correct: directly stated in the advantages list.

B. Incorrect: the text says it costs about the same as coal and is not expensive to make.

C. Incorrect: it says it causes no pollution like burning fossil fuels.

D. Incorrect: it does not produce smoke or carbon dioxide, so it does not contribute to the greenhouse effect.

E. Incorrect: it produces huge amounts of energy, not small amounts.